We tested so many hard drives before finding this video. Changing the power supply cable totally fixed our problem. We found an old router that had the same power specs: 100-240V 50-60Hz 12v 2.0A. We tried a 1.5A cord, but it didn't work. Thank you so much for the video.
Wow! I'm a computer tech and never would of thought of this. I tried many different hard drives, using different formats (FAT, NTFS, exFAT) still not detecting the hard drive, even bought a 'green' drive thinking that would do it. Saw your video and used an old modem power supply and boom ! worked ! Appreciate this video man ! !!! God bless
I'm on power supply number 3 now and fan #2. The fan on the processor will eventually slow down and cause the processor to overheat and the unit starts rebooting. A new fan solves that issue.
I replaced my old DVR with a new one and thought "I'll just use all the cables from the old one so I don't have to re-fish the wires through my cabinet". "No Disc" error appeared in the corner of my monitor and no recording was taking place. Struggled to figure out what the problem was and then I found this video. Plugged the adapter in that came with it and now it detects the Hard drive and it started recording. Thanks for this you just saved me a call to Customer Service.
my DVR hasn't been working for the past 2 weeks now, I ordered a new Hard drive, and before installing it today, thought I would look up if my DVR still had warranty on google, and am I glad I found this video as the first link. Found a 12V 3.0Amp cable and everything began to work. Previously is stopped recording and beeping, then it completely stopped powering on and only beeped. Swapping the cable solved the issue, Thanks!!!
Thanks for the video!! I had EXACTLY the same problem with my Lorex DvR. Found .5-.6 VDC output on the power supply. Plugged in another 12 Vdc power supply & it’s now running perfectly!!!!! Thanks again…
Same problem, my hard drive failed or did it. I went out and bought another, problem fixed ? well no. What to do I could not work it out . Cameras working fine, reconected the hard drive so no joy. Searching the wonder called You Tube. And low and behold I found this site. Give it a go ? So I wasted money on buying a hard drive. This solution was put forward and Eureka. Thanks very much.
Omg, thanks a million. You just save me 6 hours of unnecessary trouble shooting. About 3 weeks ago when I would bring my cameras up away from home on my iPhone. I would see a message "No Card" pop up on my phone as I switch from one camera to the next. A week later I tried to bring my cameras up on my phone "Connect Fail" would show up. Today 01/02/2019, I start trouble shooting my Lorex DVR, I knew it was something to do with the DVR. I was so frustrated thinking "Now I have to sent my DVR back to Lorex, which will take 2 weeks or more".Good I keep extra supply cords around. Thank you, thank you, thank you, so,so,so,so,so much, & once again THANK YOU.
Thank you for this video!! I have spent over an hour on the phone with Lorex Tech support trying to figure out why my NVR wouldn't recognize the HDD and not once did they suggest replacing the power supply. I tried everything their tech support suggested to no avail. I saw your video, and not believing it could be so simple, tried it anyway, and yup, that was the problem. Thank you for providing this simple solution!!!!
Back to basics. Many unsuccessful attempts at trying to sove this issue. Very glad that I came across your video. I hooked up the DVR to a large 12V power upply that I use for the cameras. Works just fine now. Amazing no one else had suggested this. Thank you for this info and a great video
I tried so many things from the website and nothing worked. I found this video and decided to try it. IT WORKED PERFECTLY. Can’t thank you enough! Good work!
After 3 days of trying to resolve my problem, I finally watched this vedio, and found that the power supply was the problelm all along. I just wish I had found this fix, before pulling my dvr out 3 times and checking everything. Thanks for sharing this fix.
It took me awhile to find it too. I checked a bunch of stuff before stumbling onto the power supply. It's a very common failure of all electronics. We have them fail on pvrs at work all the time. Many techs just swap the Pvr and not the power supply because it is in behind a cabinet or something and they are too lazy to fish the power cord. Then the new one acts up and I get dispatched to an angry customer that tells me that the box has already been replaced. First thing i ask. Did the previous tech change the power brick. Usually the answer is "I don't know" because especially now with covid we don't want customers hanging around too close while we work on the house. I pull the power brick, find it is usually hot as a firecracker and covered in dust confirming that it wasn't changed last week. Swap the power supply and guess what, problem solved.
I had the same issue with my Dahua system and was about to change out the hard drive, until I saw this awesome video. My adapter was replaced and the system now works ! Thank You!
It actually worked. thanks for the video. I took one of the power cords for the cameras ( the one that splits into multiple power cords) and used it to power the unit. the original adapter was 12volt DC 2.0Amp . and the camera power cables adapter is 12Volt DC 2.5 Amp. So The 2.5A is the maximum current it can supply but it works fine delivering less current....
Mine have the same problem. I disconnected the HDMI, and the power adapter at the back of the DVR, rebooted it and it WORKED. Thanks for the video, so I believe the power supply is the problem. I did not replace my power adapter just pull out and cleaned it and plugged it in again. Thanks!
Thanks! I moved my system and on reboot I got a "no disk" error. I was baffled until I watched this video to 1:36. Turns out I grabbed the wrong power supply when I hooked it back up. It would power the system, but not the HDD. You saved me from buying another DVR.
Wow, Thank You so much was just ready to buy a new unit, mine is about 3 1/2 year's old changed out power supplies to camera"s but not recorder. It was recommended to take the unit apart and reseat the connections and or replace hard drive. Just happened to have a better power supply sitting next to the unit as a spare for the cameras..Worked great thank you so much.
Mine has been going now for over 10 years I'm on the third power supply for the unit and the second one for the cameras and I'm on the second fan for the CPU. I just used a cheap fan that I found in a computer shoe horned it into the case problem solved
Wow I have an random adapter connected for the power of the cameras and one for the power of the box. I just swapped them and the HDD started working. Great video and great advice I thought my security system was just broken
Mine makes a load constant humming noise which is really annoying. I not sure if that is the fan or hard drive. If that is the hard drive, can I replace it with a SSD drive? Any thoughts?
Sure you could replace it with an SSD and you will be replacing it every year or sooner as SSD are not designed for constant write cycle. They have limited writes and after that the memory cells start to fail and data vanishes. You have no idea how many SD cards i have burned through using them with security cameras. One day they work and the next they are blank.
Thank you for this video! I've been racking my brain trying to figure out what's wrong and here it's something so simple. I did not consider the adapter going bad as part of my troubleshooting.
Are sure you had the correct power supply? It looked like a 2Amp. I have a similar situation with several Q-See DVRs. They were never used but 8 yrs old. I assumed the large power adaptors (3.5 or 4Amp) were for the DVR and the small one like yours was for the cameras pigtail splitter for cam & IR emitters. I just looked at the manual and it shows both supplies are the larger brick type, which is not what shipped. After a few days of use, the HDD Alarm went off, (no drive). I swapped out the DVR and the drive wasn't detected on a DVR I had been testing with a different power supply. Like others have noticed, It seemed like the supply worked enough to run cameras and DVR electronics but not spin up the drive. BTW, Q-See DVRs for either 4 or 16 cameras were shipped with 3.5-4.0 Amp Power Supplies, and you appear to be using a 2 Amp.
Thanks a bunch! I too was thinking the HDD was dead until I decided to check for a video. And boom goes the dynamite, you are the man! Thanks for helping people! Gotta give back...
Thanks, really saved me alot of time and money, what I did notice is when I looked at the hard drive config on the system it stated that the size was 496 mb when i had a 1.75 tb drive so it was definetly not reading the drive correctly and also on the screen some of the camera displays had a reddish hue to them. Thanks again,
THANK YOU SO MUCH. AFTER EXCHANGING THE HDD, CLEANING CONNECTIONS AND REPLACING THE CABLES WITH NO RESULTS. WATCHED YOUR VIDEO, REPLACED THE POWER SUPPLY AND IT WORKS GREAT.
You just learned the most important part of troouobleshooting. If a device uses an external power supply brick or wall wart, swap that first before doing anything else because 90% of the time that is the fault. Now excuse me while I go over to a friends place and pull his head out of his ass. (and hand him a new wall wart for his DSL modem)
Yep. That's the issue. When I use my bench supply it draws ~1.3A and works fine. When powered by the adaptor the current would bounce around .9A and the 12v would drop down. The HDD uses the 12v for the motor and won't spin up if it detects a voltage drop out at the drive. The rest of the lorex device works because the 12v is regulated down to 5v / 3.3v for the other electronics and the power supply would remain above those levels.
BTW.. If your fan bites the dust or starts squealing you can get another one w/ heat sink on Amazon for $15. Search "Artidux 5V 2Wire 2Pin Replacement Heatsink Cooling Fan for DaHua DVR/HDCVI" www.amazon.com/gp/product/B07MJJG29Q/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
What type of hard drive do I need for a high definition DVR? I took one from a analog DVR....the playback on the hd DVR was distorted. Your help would be greatly appreciated
Wowww thank you soooo much. I went through 2 DVRs and didn’t even think about using a different power supply. I saw this video and thought it’s couldnt be this easy. So I tried it and it worked. Thanks!!!
I bought a new adapter and it worked well for a while. Then the same reboots happened again. Is 3 amps sufficient to run the DVR ? The adapters surface can reach 103 deg. F. If you run the DVR or cameras from a PC PSU , you get interference.
The one I am using is rated 2.5 amps and has been running for over 2 years, plus the adapter was not new, it was an old one from the recycle bin at work from an old cable box.
Thanks for the video. Switched out hard drives and nothing. Noticed it wasnt recognizing the hard drive. How crazy that it was just the power supply. If this is a common problem you would think they would fix it. I have a Q-See and this fixed my problem. So thankful I dont have to invest in another DVR...Yet. Thanks again.
My Lorex adaptor output says 48.0V -2.0A, 96.0 W. Can I use a 12 V on this one? Or does it have to be a 48.0 volt? I figured out the amp can be higher. Does it matter on the watts? Trying to figure out what size adaptor to get. Thank you.
@@Melissa-ve2zw you need to select a power supply that is the same as the original. On the device you are powering will specify what is required. If the device requires 48 volts you need a 48v power supply. That is a odd voltage. That's what equipment designed for telecom runs at as the battery systems are all 48v. Most devices will operate on one of some pretty standard DC voltage. 12, 19, 24, 48. 19 is real common for laptops. The output voltage of the power needs to be the same as the input of the device unless the device is a multi voltage device which will clearly be labeled on the device.
@@12voltvids the input says 100-240V, 50/60 Hz and 1.5 A. The output says 48.0V , 2.0 A and 96.0W and this is for a Lorex 4K . Sorry so just to clarify I need all the volts for input and output to match exactly?
Spent way to much time over thinking my issue. Watched this video, and it all made sense. Great refresher for me since I have not worked on these in quite some time. Thanks
Um, is this the right video? I have an LHB900 and when I logged in, with my right password, my "taskbar" disappeared for a moment then when I checked if I was logged in, I saw that I wasn't logged in. Sounds weird, right?
Thank you so so so much!!!! You are amazing!! That fixed my problem! I have a QSee dvr and I was having exactly the same issue. I was advice that I might have to purchase a new dvr. Thanks God I found your video!! You saved me a lot of money and time ! God Bless you !
Wow I can't believe just changing the plug worked. Thank you for making this video. Saved me a lot of money because I thought I had to buy a whole new Lorex system.
Great advice! I really appreciate your help, this saved me going out and buying a new hard drive. Would never have thought it was the power supply. Unit seemed to run, just no hd detected. Got vid just fine. Guess the power supply was just too low to get the platter spinning. Thankx again for the help
I saved you guys the cursing, as I thought my hard drive had failed too, and went to the trouble of swapping it out only to get the same error. Then the light bulb went on and I swapped the power supply. Walla, booted up. So I put the original drive back in and fired up the camera and made the video. I didn't initially shoot the hard drive swap because where the DVR was located it isn't accessible with the camera. It is in a security cabinet, and I actually removed it, and just had it balanced on a little table to shoot. So it may seem that I just "knew" the adapter was bad. Not true, I had worked on this for quite some time before I clued in, because this unit was not that old, I didn't think the adapter would fail that fast. But this isn't the only trouble I have had with this. The fan on the CPU also failed first, and caused it to overheat and start rebooting, so I stuffed a new larger fan from a laptop in there.
Thanks 12voltvids guy! Stupid DVR woke me up this morning at 7 AM, beeping with this same HDD error. You saved me from spending a ton of money on a new hard drive that wouldn't have helped anyway. And, to top it off, I just happened to have had an old power supply laying around that got me back up in a few minutes and cost me nothing.
Mine has failed twice (the power brick that is) and the camera power brick has failed too. This is the weak link on these units. Mine runs 24/7 and the only other thing that has failed is the fan on the processor on the DVR.
Thanks for the video. Mine did the same thing today. Luckily, I found your video and decided to try that first. Went to Radio Shack with the old power supply and asked for a new one. The guy tested the old one and said it was fine. I decided to try a new one anyway (could always return it if the problem persisted). Came home, plugged the new power supply in and everything is working normally again.
What happens is filter capacitors on the secondary side dry up and the ESR goes up. Under no load the voltage will appear normal, but under load the voltage fluctuates and that causes the rebooting issue.
Thank you so much! That was the problem. I swapped the cameras and hard drive power supplies and quickly fix hard drive problem. Luckily, I found spare 12V in my box for the cameras.
Thank you for this. Changing adapters worked for me. When I disconnected the existing one it was extremely hot and after letting it cool tried it with another device and it didn’t work properly either so that pretty much confirmed a faulty adapter. My internal fan also went bad last year and the unit was overheating and shutting down. After I changed it out, all good. Not sure how much longer this unit is going to last though so thankfully they are much less expensive today than 4 years ago.
sumesh77 The reliability of any electronic devices depends on how cheap the manufacture was when sourcing power adapters. Had it come with a nice linear supply with a big iron transformer it would never fail. But copper costs more than a bunch of capacitors and transistors.
Mine stopped working in the middle of the night. It says no video input. Could this be the same problem? I turned it off for 5 minutes and back on and it doesn’t beep anymore the blue light is blinking though but no video.
I have to apologize, when I start looking at the video I said bad words about what you were saying :) but you were bang on. How can a power supply is able to power the DVR but not the hard drive and still producing 12 volts when tested. Thanks, I saved a lot of cash with your video. Replaced the power supply, and bingo.
Power supplies cause more problems than just about anything. If you put it under full load you would see either the voltage drop or high frequency ripple passing through with the DC. Btw I am on my 3rd power supply now, and the second for the cameras. They are the weak link on this system which other than that has been rock solid.
Thank you so much. You the man! I had changed the hd and fan but still the hd not recognized. As a last resort I found your video and sure enough changing the power supply solved the problem. Thank to UA-cam for sharing these videos. My advice is that when all else fails go to UA-cam
@@12voltvids Yes it is, but I wonder why Lorex technical support website doesn't show this issue 😭, until i verify all my hard drives and they have the same issue then i start searching for solution on the internet. Lucky me, i found yours.
@@nguyen6330 Because Lorex like ALL companies today do not want to deal with out of warranty technical issues. They got rid of their service engineers like everyone else. Notice I said service engineer not service technician. A technician replaces parts using the designated service procedure. Not all service technicians are engineers. A service engineer on the other hand has a greater working knowledge of the product, understands electronic engineering theory and design. Knows how to read a schematic and understands circuit behavior went it is operating, and more importantly when it is NOT operating. That is the major difference between a design engineer and a service engineer. The design engineer understands perfectly how a circuit operates when it is operating correctly. Put in a couple of bad parts and some design engineers are at a loss because they have no experience with the different failure modes. This is where the service engineer comes in. Myself I am a service engineer. I have limited design training. I can design a simple circuit if I need to, but I am very well trained on the troubleshooting aspect of many electronics. I obviously don't know them all, and I left the business professionally in 2003, so I have fallen behind as far as the modern shit goes. I am in my zone for the late 70's to early 2000 consumer crap, the stuff I worked on mainly during my 20 years doing this for a living.
Great video thanks for sharing. Definitely going to be trying the power source b4 reformatting. I got footage I need for review and don’t want to reformat just yet.
here's question for anybody who owns a lorex cctv i bought brand new hard drive for my system installed correctly reconnected it but now here's tricky bit i plugged power adaptor back in but it's automatically turns it self off reboots......... so when i disconnect hard drive it's operating system works fine..... i can view on also i have added new firmware so i know it's not OS system so it must be power adaptor is that right ????
It works, I had the same problem, I exchanged the power supply and works again, the HDD fault disappears. Thank you very much! I almost buy a new HDD. God bless you!
Been trying for days to get my NVR to detect a 2TB HDD I installed, it had no problem detecting an 80Gb I had laying around, the 2TB would show up fine connected to a PC. after trying about everything, I decided to change the power supply, and bam! it detected it right off the bat. truly amazing. my guess is the newer HDD needed more power, and the power supply could not handle the heavier load.
Thank you so much my lorex dvr had the same problem. I was about to buy new hard disk which cost about $150-200 luckily I found your video and I had one adaptor in spare so I try using with dvr, it worked the dvr started recording.
The power supply is the weak link on this as is the cooling fan on the processor. When you hear it start to scream, it is time for a new fan. Otherwise the processor will overheat and the unit start rebooting.
God Bless you!! Thank you so much. This was my identical problem and instead of buying another hard drive or a new system tried what you advised and it worked perfectly!!
At first it had the sound but it was showing live video but I could not record it or look anything from the past but now it suddenly turned off now I cannot look anything in the screen or do anything and it keep making the sound even if I take out the hard drive or replace with the new one can you help me please.
I have H.264 dvr, suddenly this answer( device is not on line) when using phone and there is a beep every 2 minutes, noticed no light on HDD. Could it be the adapter error?
Salwa Hussein Possibly or someone might be trying to hack your system. Do not ever take an "update " as that is how they get in and turn your DVR into bitcoin miner. Factory reset and choose a hard password. Will keep the hackers at bay. The power supply is likely causing your issue. My DVR recently had someone trying to break in. I just haven't done the video yet.
@@12voltvids Thank you for help. Did not change factory setting yet , as have not screen. Using Mobile and Internet to see outdoor camera only. Very poor usage! But I always suspect that at the same time every morning there is a beep like if someone is there. Any way now I cannot even open the camera. Will try to change the adapter. Appreciate your kind answer.
i was about to buy a new HDD... thanks for you video, i changed my power supply for another. no problem since then! XD 100-240V 50-60Hz 12v 2.0A Lorex 4k n841 THANK YOU
Thank you for your solution. Had gone out and bought a new Hard drive, because it showed a HDD error, but that did not work, then watched your video, went back and bought a $19 12V 5 amp adapter and problem solved. It now also appears to be running quieter as well, could be the mother board fans and hard drive were starving for current power, old adapter was a 3 amp? You saved me $600, thanks again.
Hello i have the same problem with my security system no hdd. I want to buy a new power supply does it needs to be the same : input 100-240v 50/60hz 0.6a max output 12v 2.0a?
The input depends on your country. Most are universal now 100-240. The output just needs to be 12v with minumum 2.0 amps. Make sure polarity of plug is the same and you are good to go. I am using a 12v 2.5 on mine now.
12voltvids. Thanks man i gonna try a new one and see what happens i took out the hard drive and this guy tested it and said it wasnt showing up in his computer..might need to buy a hard drive..but before i go do that doesnt hurt to check the plug. It started having problems when i change a power muti plugs outlet to plug some extra stuff to it and it was a cheap one and the next day i found it burn and i change that with a good one and it started acting up with no hdd.i hope it works but thanks for quick respond man
Hi, this is whats happening to my dvr. It said Hard disk is not available for recording, not sure if this happen because I formatted my drive or what. But now my drive is not showing up in the Hard Drive Manager. Can u or someone help me out on this??Thanks
I have similar problem and system keeps beeping, when i connect monitor in settings it shows no hd disk . So basically what u r showing is we should just change the adapter and it will fix the problem? but if the problem is with adapter then how come system is able to start and just not recognise hdd . please help.
Voltage is falling on power supply. HDD takes more current to spin up, not enough current, voltage drops unit fails. Mine working great with new power supply. New firmware update just pushed last week to fix some known issues when connecting a mix of HD and SD cameras. Now the SD cameras work in color.
12voltvids so i can try any adapter with similar configurations or u suggest some specific adapter i can buy . if u can suggest it will be great. i m layman with electric and electronics , i had given up on my home monitoring after this problem
Dude!!!! Thanks for the video! Now I unfortunately, but not really unfortunate, I bought a 2tb hdd. Here the problem was the power cord. I'm a subscriber to your channel now! Thanks.
We tested so many hard drives before finding this video. Changing the power supply cable totally fixed our problem. We found an old router that had the same power specs:
100-240V
50-60Hz
12v 2.0A.
We tried a 1.5A cord, but it didn't work. Thank you so much for the video.
Wow! I'm a computer tech and never would of thought of this. I tried many different hard drives, using different formats (FAT, NTFS, exFAT) still not detecting the hard drive, even bought a 'green' drive thinking that would do it. Saw your video and used an old modem power supply and boom ! worked ! Appreciate this video man ! !!! God bless
I did exactly as you did and BOOM:) it works. Thank you 12voltvids for sharing this video.
God bless you and your family.
@@ismailjasat4449 Totally! I work on these (buy / sale) and I too thought the HD was fried - Power adapter switch and it works!!!
4 years later and you just saved me the expense of ordering a hard drive! Thanx Buddy!!
I'm on power supply number 3 now and fan #2. The fan on the processor will eventually slow down and cause the processor to overheat and the unit starts rebooting. A new fan solves that issue.
5 Years later and still great information!! Couldn't believe it was soooo simple! Awesome information!!
5 years later DVR and cameras going strong.
I replaced my old DVR with a new one and thought "I'll just use all the cables from the old one so I don't have to re-fish the wires through my cabinet". "No Disc" error appeared in the corner of my monitor and no recording was taking place. Struggled to figure out what the problem was and then I found this video. Plugged the adapter in that came with it and now it detects the Hard drive and it started recording. Thanks for this you just saved me a call to Customer Service.
my DVR hasn't been working for the past 2 weeks now, I ordered a new Hard drive, and before installing it today, thought I would look up if my DVR still had warranty on google, and am I glad I found this video as the first link. Found a 12V 3.0Amp cable and everything began to work. Previously is stopped recording and beeping, then it completely stopped powering on and only beeped. Swapping the cable solved the issue, Thanks!!!
2020 and this still applies, thanks so much.
It worked 2023. Thanks bro, I already bought a new HD. Congratulations bro. It was so simple
You're welcome!
2021 I works!! You're a genius my friend. You saved the environment a lot of garbage and pockets a lot of $$$.
Thanks for the video!! I had EXACTLY the same problem with my Lorex DvR. Found .5-.6 VDC output on the power supply. Plugged in another 12 Vdc power supply & it’s now running perfectly!!!!! Thanks again…
Brilliant! worked perfectly for my lorex system. All it required was a change of power supply and its up and running again. Thank you so much!!
Same problem, my hard drive failed or did it. I went out and bought another, problem fixed ? well no. What to do I could not work it out . Cameras working fine, reconected the hard drive so no joy. Searching the wonder called You Tube. And low and behold I found this site. Give it a go ? So I wasted money on buying a hard drive. This solution was put forward and Eureka. Thanks very much.
Thank you soooooo much!!! This video is old(7yrs ) but in 2024 it still worked!!! You Sir just saved me $300 dollars 🎉
Mine still going strong
Omg, thanks a million. You just save me 6 hours of unnecessary trouble shooting. About 3 weeks ago when I would bring my cameras up away from home on my iPhone. I would see a message "No Card" pop up on my phone as I switch from one camera to the next. A week later I tried to bring my cameras up on my phone "Connect Fail" would show up. Today 01/02/2019, I start trouble shooting my Lorex DVR, I knew it was something to do with the DVR. I was so frustrated thinking "Now I have to sent my DVR back to Lorex, which will take 2 weeks or more".Good I keep extra supply cords around. Thank you, thank you, thank you, so,so,so,so,so much, & once again THANK YOU.
Thank you for this video!! I have spent over an hour on the phone with Lorex Tech support trying to figure out why my NVR wouldn't recognize the HDD and not once did they suggest replacing the power supply. I tried everything their tech support suggested to no avail. I saw your video, and not believing it could be so simple, tried it anyway, and yup, that was the problem. Thank you for providing this simple solution!!!!
Back to basics. Many unsuccessful attempts at trying to sove this issue. Very glad that I came across your video. I hooked up the DVR to a large 12V power upply that I use for the cameras. Works just fine now. Amazing no one else had suggested this. Thank you for this info and a great video
I tried so many things from the website and nothing worked. I found this video and decided to try it. IT WORKED PERFECTLY. Can’t thank you enough! Good work!
After 3 days of trying to resolve my problem, I finally watched this vedio, and found that the power supply was the problelm all along. I just wish I had found this fix, before pulling my dvr out 3 times and checking everything. Thanks for sharing this fix.
It took me awhile to find it too. I checked a bunch of stuff before stumbling onto the power supply. It's a very common failure of all electronics. We have them fail on pvrs at work all the time. Many techs just swap the Pvr and not the power supply because it is in behind a cabinet or something and they are too lazy to fish the power cord. Then the new one acts up and I get dispatched to an angry customer that tells me that the box has already been replaced. First thing i ask. Did the previous tech change the power brick. Usually the answer is "I don't know" because especially now with covid we don't want customers hanging around too close while we work on the house. I pull the power brick, find it is usually hot as a firecracker and covered in dust confirming that it wasn't changed last week. Swap the power supply and guess what, problem solved.
I had the same issue with my Dahua system and was about to change out the hard drive, until I saw this awesome video. My adapter was replaced and the system now works ! Thank You!
You are the man!! Just fixed my issue on a Lorex LH060. Clicking HD was due to bad power supply.
It actually worked. thanks for the video. I took one of the power cords for the cameras ( the one that splits into multiple power cords) and used it to power the unit. the original adapter was 12volt DC 2.0Amp . and the camera power cables adapter is 12Volt DC 2.5 Amp. So The 2.5A is the maximum current it can supply but it works fine delivering less current....
That's fine. I am using a 3 amp max on mine.
Genius! Thanks! I couldn't find a spare power cord and this solved my problem!
Mine have the same problem. I disconnected the HDMI, and the power adapter at the back of the DVR, rebooted it and it WORKED. Thanks for the video, so I believe the power supply is the problem. I did not replace my power adapter just pull out and cleaned it and plugged it in again. Thanks!
Hey man, thanks for the video. My system came with a 48v -- 2A power supply. Does this mean a standard 12 volt one won't work?
Thanks! I moved my system and on reboot I got a "no disk" error. I was baffled until I watched this video to 1:36. Turns out I grabbed the wrong power supply when I hooked it back up. It would power the system, but not the HDD. You saved me from buying another DVR.
Thanks for posting. I changed the power adapter and it works again. You saved me.
Mind = blown. I thought my crappy Chinese DVR was faulty, but it was the power supply! Great video.
Wow, Thank You so much was just ready to buy a new unit, mine is about 3 1/2 year's old changed out power supplies to camera"s but not recorder. It was recommended to take the unit apart and reseat the connections and or replace hard drive. Just happened to have a better power supply sitting next to the unit as a spare for the cameras..Worked great thank you so much.
Mine has been going now for over 10 years I'm on the third power supply for the unit and the second one for the cameras and I'm on the second fan for the CPU. I just used a cheap fan that I found in a computer shoe horned it into the case problem solved
Wow I have an random adapter connected for the power of the cameras and one for the power of the box. I just swapped them and the HDD started working. Great video and great advice I thought my security system was just broken
Mine makes a load constant humming noise which is really annoying. I not sure if that is the fan or hard drive. If that is the hard drive, can I replace it with a SSD drive? Any thoughts?
Sure you could replace it with an SSD and you will be replacing it every year or sooner as SSD are not designed for constant write cycle. They have limited writes and after that the memory cells start to fail and data vanishes. You have no idea how many SD cards i have burned through using them with security cameras. One day they work and the next they are blank.
awesome... after watching your vid, I replaced my units power adapter, and it started working again. Thank you for your time and information.
Thank you for this video! I've been racking my brain trying to figure out what's wrong and here it's something so simple. I did not consider the adapter going bad as part of my troubleshooting.
Bad power adapters cause many problems. Even the liner type but especially the switch mode type.
Are sure you had the correct power supply? It looked like a 2Amp. I have a similar situation with several Q-See DVRs. They were never used but 8 yrs old. I assumed the large power adaptors (3.5 or 4Amp) were for the DVR and the small one like yours was for the cameras pigtail splitter for cam & IR emitters. I just looked at the manual and it shows both supplies are the larger brick type, which is not what shipped. After a few days of use, the HDD Alarm went off, (no drive). I swapped out the DVR and the drive wasn't detected on a DVR I had been testing with a different power supply. Like others have noticed, It seemed like the supply worked enough to run cameras and DVR electronics but not spin up the drive. BTW, Q-See DVRs for either 4 or 16 cameras were shipped with 3.5-4.0 Amp Power Supplies, and you appear to be using a 2 Amp.
Thanks a bunch! I too was thinking the HDD was dead until I decided to check for a video. And boom goes the dynamite, you are the man! Thanks for helping people! Gotta give back...
Thanks, really saved me alot of time and money, what I did notice is when I looked at the hard drive config on the system it stated that the size was 496 mb when i had a 1.75 tb drive so it was definetly not reading the drive correctly and also on the screen some of the camera displays had a reddish hue to them. Thanks again,
2021 and this fixed my system. Thank you so much!
97000 systems fixed!
Six years later & your info worked..Thanks..
Mine still humming along 24/7
THANK YOU SO MUCH. AFTER EXCHANGING THE HDD, CLEANING CONNECTIONS AND REPLACING THE CABLES WITH NO RESULTS. WATCHED YOUR VIDEO, REPLACED THE POWER SUPPLY AND IT WORKS GREAT.
You just learned the most important part of troouobleshooting. If a device uses an external power supply brick or wall wart, swap that first before doing anything else because 90% of the time that is the fault. Now excuse me while I go over to a friends place and pull his head out of his ass. (and hand him a new wall wart for his DSL modem)
Just like someone else said, still relevant. Just swapped the power supply to my 2020 version (12V 3A) and it fixed my HDD issue.
Yep. That's the issue. When I use my bench supply it draws ~1.3A and works fine. When powered by the adaptor the current would bounce around .9A and the 12v would drop down. The HDD uses the 12v for the motor and won't spin up if it detects a voltage drop out at the drive. The rest of the lorex device works because the 12v is regulated down to 5v / 3.3v for the other electronics and the power supply would remain above those levels.
BTW.. If your fan bites the dust or starts squealing you can get another one w/ heat sink on Amazon for $15. Search "Artidux 5V 2Wire 2Pin Replacement Heatsink Cooling Fan for DaHua DVR/HDCVI" www.amazon.com/gp/product/B07MJJG29Q/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
What type of hard drive do I need for a high definition DVR? I took one from a analog DVR....the playback on the hd DVR was distorted. Your help would be greatly appreciated
Wowww thank you soooo much. I went through 2 DVRs and didn’t even think about using a different power supply. I saw this video and thought it’s couldnt be this easy. So I tried it and it worked. Thanks!!!
I bought a new adapter and it worked well for a while.
Then the same reboots happened again.
Is 3 amps sufficient to run the DVR ?
The adapters surface can reach 103 deg. F.
If you run the DVR or cameras from a PC PSU , you get interference.
The one I am using is rated 2.5 amps and has been running for over 2 years, plus the adapter was not new, it was an old one from the recycle bin at work from an old cable box.
@@12voltvids Well, my Lorex 16 Ch unit uses a 3 amp.
Any advice as to what causes a 0x01, 0x05 ?
You saved me a ton of money. Thank you for deep diving this issue you were having, as I was having it too and now everything works ! Thank you!
Thanks for the video. Switched out hard drives and nothing. Noticed it wasnt recognizing the hard drive. How crazy that it was just the power supply. If this is a common problem you would think they would fix it. I have a Q-See and this fixed my problem. So thankful I dont have to invest in another DVR...Yet. Thanks again.
My Lorex adaptor output says 48.0V -2.0A, 96.0 W. Can I use a 12 V on this one? Or does it have to be a 48.0 volt? I figured out the amp can be higher. Does it matter on the watts? Trying to figure out what size adaptor to get. Thank you.
You need to use the correct voltage. The input voltage will be printed on the device
Okay so it is the input voltage I need to go by. Not the output? Thank you for the quick reply.
@@Melissa-ve2zw you need to select a power supply that is the same as the original. On the device you are powering will specify what is required. If the device requires 48 volts you need a 48v power supply. That is a odd voltage. That's what equipment designed for telecom runs at as the battery systems are all 48v. Most devices will operate on one of some pretty standard DC voltage. 12, 19, 24, 48. 19 is real common for laptops. The output voltage of the power needs to be the same as the input of the device unless the device is a multi voltage device which will clearly be labeled on the device.
@@12voltvids the input says 100-240V, 50/60 Hz and 1.5 A. The output says 48.0V , 2.0 A and 96.0W and this is for a Lorex 4K . Sorry so just to clarify I need all the volts for input and output to match exactly?
@@Melissa-ve2zw
Yes this DVR operates on 48 volts.
Spent way to much time over thinking my issue. Watched this video, and it all made sense. Great refresher for me since I have not worked on these in quite some time. Thanks
I thought you were NUTS with this video but guess what, I discovered my cord was lose. Excellent solution! Thank you!
Um, is this the right video?
I have an LHB900 and when I logged in, with my right password, my "taskbar" disappeared for a moment then when I checked if I was logged in, I saw that I wasn't logged in.
Sounds weird, right?
Thank you so so so much!!!! You are amazing!! That fixed my problem! I have a QSee dvr and I was having exactly the same issue. I was advice that I might have to purchase a new dvr. Thanks God I found your video!! You saved me a lot of money and time ! God Bless you !
Wow I can't believe just changing the plug worked. Thank you for making this video. Saved me a lot of money because I thought I had to buy a whole new Lorex system.
Great advice! I really appreciate your help, this saved me going out and buying a new hard drive. Would never have thought it was the power supply. Unit seemed to run, just no hd detected. Got vid just fine. Guess the power supply was just too low to get the platter spinning. Thankx again for the help
I saved you guys the cursing, as I thought my hard drive had failed too, and went to the trouble of swapping it out only to get the same error. Then the light bulb went on and I swapped the power supply. Walla, booted up. So I put the original drive back in and fired up the camera and made the video. I didn't initially shoot the hard drive swap because where the DVR was located it isn't accessible with the camera. It is in a security cabinet, and I actually removed it, and just had it balanced on a little table to shoot. So it may seem that I just "knew" the adapter was bad. Not true, I had worked on this for quite some time before I clued in, because this unit was not that old, I didn't think the adapter would fail that fast. But this isn't the only trouble I have had with this. The fan on the CPU also failed first, and caused it to overheat and start rebooting, so I stuffed a new larger fan from a laptop in there.
So if dvr is not working does that means cameras aren’t recording?
Thanks 12voltvids guy! Stupid DVR woke me up this morning at 7 AM, beeping with this same HDD error. You saved me from spending a ton of money on a new hard drive that wouldn't have helped anyway. And, to top it off, I just happened to have had an old power supply laying around that got me back up in a few minutes and cost me nothing.
Mine has failed twice (the power brick that is) and the camera power brick has failed too. This is the weak link on these units. Mine runs 24/7 and the only other thing that has failed is the fan on the processor on the DVR.
Thanks for the video. Mine did the same thing today. Luckily, I found your video and decided to try that first. Went to Radio Shack with the old power supply and asked for a new one. The guy tested the old one and said it was fine. I decided to try a new one anyway (could always return it if the problem persisted). Came home, plugged the new power supply in and everything is working normally again.
What happens is filter capacitors on the secondary side dry up and the ESR goes up. Under no load the voltage will appear normal, but under load the voltage fluctuates and that causes the rebooting issue.
Thank you so much! That was the problem. I swapped the cameras and hard drive power supplies and quickly fix hard drive problem. Luckily, I found spare 12V in my box for the cameras.
Thank you for this. Changing adapters worked for me. When I disconnected the existing one it was extremely hot and after letting it cool tried it with another device and it didn’t work properly either so that pretty much confirmed a faulty adapter. My internal fan also went bad last year and the unit was overheating and shutting down. After I changed it out, all good. Not sure how much longer this unit is going to last though so thankfully they are much less expensive today than 4 years ago.
Mine still going strong.
Thanks a lot , simple solution for seemingly big problem. changed the adapter and there you go, no more beeping .
sumesh77
The reliability of any electronic devices depends on how cheap the manufacture was when sourcing power adapters. Had it come with a nice linear supply with a big iron transformer it would never fail. But copper costs more than a bunch of capacitors and transistors.
my swann dvr has same problem the power supply is 12v 2A can I use 12v 5A supply
My DVR doesnt get past the Lorex logo on boot up. What would this be caused by? I unplugged the HDD and it didnt help.
Have you tried a new power brick.
Can I ask what the amp output is on the new 12v supply you used?
2.5 amp 30 watts
Mine stopped working in the middle of the night. It says no video input. Could this be the same problem? I turned it off for 5 minutes and back on and it doesn’t beep anymore the blue light is blinking though but no video.
I have had both the power supplies fail over time. It is the weak link.
I've had exact same problem since last week. It made me mad but I finally found right video. Thanks so much!!!
Great. Yup this is a common fault. That and the fan on the cpu.
I have to apologize, when I start looking at the video I said bad words about what you were saying :) but you were bang on. How can a power supply is able to power the DVR but not the hard drive and still producing 12 volts when tested. Thanks, I saved a lot of cash with your video. Replaced the power supply, and bingo.
Power supplies cause more problems than just about anything. If you put it under full load you would see either the voltage drop or high frequency ripple passing through with the DC.
Btw I am on my 3rd power supply now, and the second for the cameras. They are the weak link on this system which other than that has been rock solid.
My problem is the same as what is showing on your channel 7 and 8. What is the cause please?
Appreciate taking time making the vid. Having same problem with my unit I will order new adapter from amazon give you update later.
Thank you sir from Jamaica. I replaced my adopter with an old one I found among my stuff and it worked great!!
Thank you so much. You the man! I had changed the hd and fan but still the hd not recognized. As a last resort I found your video and sure enough changing the power supply solved the problem. Thank to UA-cam for sharing these videos. My advice is that when all else fails go to UA-cam
Thank you. Replaced the power supply and it's working properly again.
thank you this helped me fix my dvr 2023!
Thanks. It works for me, but I bought the new hard drive, and it shows the same issue, then i found your video. Thanks again.
VERY common problem
@@12voltvids Yes it is, but I wonder why Lorex technical support website doesn't show this issue 😭, until i verify all my hard drives and they have the same issue then i start searching for solution on the internet. Lucky me, i found yours.
@@nguyen6330 Because Lorex like ALL companies today do not want to deal with out of warranty technical issues. They got rid of their service engineers like everyone else.
Notice I said service engineer not service technician. A technician replaces parts using the designated service procedure. Not all service technicians are engineers. A service engineer on the other hand has a greater working knowledge of the product, understands electronic engineering theory and design. Knows how to read a schematic and understands circuit behavior went it is operating, and more importantly when it is NOT operating. That is the major difference between a design engineer and a service engineer. The design engineer understands perfectly how a circuit operates when it is operating correctly. Put in a couple of bad parts and some design engineers are at a loss because they have no experience with the different failure modes. This is where the service engineer comes in. Myself I am a service engineer. I have limited design training. I can design a simple circuit if I need to, but I am very well trained on the troubleshooting aspect of many electronics. I obviously don't know them all, and I left the business professionally in 2003, so I have fallen behind as far as the modern shit goes. I am in my zone for the late 70's to early 2000 consumer crap, the stuff I worked on mainly during my 20 years doing this for a living.
Great video thanks for sharing. Definitely going to be trying the power source b4 reformatting. I got footage I need for review and don’t want to reformat just yet.
here's question for anybody who owns a lorex cctv i bought brand new hard drive for my system
installed correctly reconnected it but now here's tricky bit i plugged power adaptor back in but it's automatically turns it self off reboots......... so when i disconnect hard drive it's operating system works fine..... i can view on also i have added new firmware so i know it's not OS system so it must be power adaptor is that right ????
Thank you! You saved us from buying a new DVR.
lol...same here
It works, I had the same problem, I exchanged the power supply and works again, the HDD fault disappears. Thank you very much! I almost buy a new HDD. God bless you!
That's what it was man! Thank you. My system kept rebooting, and it only reboot it when I unplugged the hard drive.
What happens is current drops due to dried out caps in power supply. Then the voltage starts to drop and the unit reboots.
Been trying for days to get my NVR to detect a 2TB HDD I installed, it had no problem detecting an 80Gb I had laying around, the 2TB would show up fine connected to a PC.
after trying about everything, I decided to change the power supply, and bam! it detected it right off the bat. truly amazing. my guess is the newer HDD needed more power, and the power supply could not handle the heavier load.
I was getting the same error. I switched the power supply and that worked. I never thought to try that. Good video.
Thank you so much my lorex dvr had the same problem. I was about to buy new hard disk which cost about $150-200 luckily I found your video and I had one adaptor in spare so I try using with dvr, it worked the dvr started recording.
The power supply is the weak link on this as is the cooling fan on the processor. When you hear it start to scream, it is time for a new fan. Otherwise the processor will overheat and the unit start rebooting.
God Bless you!! Thank you so much. This was my identical problem and instead of buying another hard drive or a new system tried what you advised and it worked perfectly!!
Tried everything. Finally I found this video and wala, she’s alive
Very common fault. The power supply for the cameras has also gone south and was replaced a year or so ago. My unit is still going strong. Runs 24/7
Thanks. My dvr was doing the same thing today and this video pointed me to the solution. The adapter! Thanks once again...
thanks for the feed back, I had the same issue, I followed your suggestions and it is working now, thanks again
What if the buttons dont work to bring up menue? Tried mouse and buttons on the unit with no avail.
Buttons can be disabled in the menu. Right click mouse to bring up menu.
At first it had the sound but it was showing live video but I could not record it or look anything from the past but now it suddenly turned off now I cannot look anything in the screen or do anything and it keep making the sound even if I take out the hard drive or replace with the new one can you help me please.
This still works perfectly! Thank you so much
I have H.264 dvr, suddenly this answer( device is not on line) when using phone and there is a beep every 2 minutes, noticed no light on HDD.
Could it be the adapter error?
Salwa Hussein
Possibly or someone might be trying to hack your system. Do not ever take an "update " as that is how they get in and turn your DVR into bitcoin miner. Factory reset and choose a hard password. Will keep the hackers at bay. The power supply is likely causing your issue. My DVR recently had someone trying to break in. I just haven't done the video yet.
@@12voltvids Thank you for help. Did not change factory setting yet , as have not screen. Using Mobile and Internet to see outdoor camera only.
Very poor usage! But I always suspect that at the same time every morning there is a beep like if someone is there. Any way now I cannot even open the camera. Will try to change the adapter. Appreciate your kind answer.
do you have to use the same amp power supply or can you go a little larger?
As long as it is 12 volts you can go higher in current. The DVR will only draw what it needs. If you undersize the power supply you will burn it out.
@@12voltvids thanks man, I appreciate the info.
i was about to buy a new HDD... thanks for you video, i changed my power supply for another. no problem since then! XD
100-240V
50-60Hz
12v 2.0A
Lorex 4k n841
THANK YOU
I did try this and it worked, but I have a error out to the side of the hard drive. Why is that???
Thank you so much. I had the exact same problem I fix it. Thanks to your video.
Glad it helped
Thank you for your solution. Had gone out and bought a new Hard drive, because it showed a HDD error, but that did not work, then watched your video, went back and bought a $19 12V 5 amp adapter and problem solved. It now also appears to be running quieter as well, could be the mother board fans and hard drive were starving for current power, old adapter was a 3 amp? You saved me $600, thanks again.
This helped me tremendously. Thank you.
Hi, mine is just stuck at the display screen that said lorex...and nothing else
Thanks for the informative video, My power adaptor was the problem all along... :)
Always is.
Hello i have the same problem with my security system no hdd. I want to buy a new power supply does it needs to be the same : input 100-240v 50/60hz 0.6a max output 12v 2.0a?
The input depends on your country. Most are universal now 100-240. The output just needs to be 12v with minumum 2.0 amps. Make sure polarity of plug is the same and you are good to go. I am using a 12v 2.5 on mine now.
12voltvids. Thanks man i gonna try a new one and see what happens i took out the hard drive and this guy tested it and said it wasnt showing up in his computer..might need to buy a hard drive..but before i go do that doesnt hurt to check the plug. It started having problems when i change a power muti plugs outlet to plug some extra stuff to it and it was a cheap one and the next day i found it burn and i change that with a good one and it started acting up with no hdd.i hope it works but thanks for quick respond man
Hi, this is whats happening to my dvr. It said Hard disk is not available for recording, not sure if this happen because I formatted my drive or what. But now my drive is not showing up in the Hard Drive Manager. Can u or someone help me out on this??Thanks
Thanks for the video, I was frustrated trying to figure out what was wrong with mine . Mine was also a bad power supply , easy fix...
I have similar problem and system keeps beeping, when i connect monitor in settings it shows no hd disk . So basically what u r showing is we should just change the adapter and it will fix the problem? but if the problem is with adapter then how come system is able to start and just not recognise hdd . please help.
Voltage is falling on power supply. HDD takes more current to spin up, not enough current, voltage drops unit fails. Mine working great with new power supply. New firmware update just pushed last week to fix some known issues when connecting a mix of HD and SD cameras. Now the SD cameras work in color.
12voltvids so i can try any adapter with similar configurations or u suggest some specific adapter i can buy . if u can suggest it will be great. i m layman with electric and electronics , i had given up on my home monitoring after this problem
Yes it is just a standard 12 volt adapter. You can go higher on the current, but not lower. I put in a 3 amp 12 volt supply from an old cable box.
Thank you so much for saving me money!!! I would have never guessed that Power adapter can be the issue .
Dude!!!! Thanks for the video! Now I unfortunately, but not really unfortunate, I bought a 2tb hdd. Here the problem was the power cord. I'm a subscriber to your channel now! Thanks.