HP DPS-1200SB A power supply conversion. Final output 13.8v and up to 70A.
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- Опубліковано 28 сер 2024
- Thanks to the Mr. BBI UA-cam channel and helpful video. I was able to convert this power supply from 12V. to 13.8V as I wanted. Big shout out to his channel.
MR BBI 1st vid
• Answering Questions "d...
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Mr BBI 2nd vid
• let's volt Mod a Hp,dp...
What I like here is you show the modification up close to both resistors you have to solder into place where Mr BBI doesn't do that at all. Not even close up shots. This mod tutorial shows everything you need to do with little explanation of why. BTW, you soldering skills are very detailed and precise and so is your hand/eye coordination. Nice job filming this whole thing and you gotta give kudos and all the accolades to 767 CB who shows you how to do this mod in the least amount of time. Thank you for doing this video.
Glad I can help, I always like to see videos that show how and what to do so I can exactly copy the project and be happy that actually works 😂. 73
... But BBI did... he has like 2 different videos... one video in particular tells which values for 14 14.8 and i think 15.5 volts as well as telling you where to put the resistors and which variable to mess with in case it goes into crowbar....
Had a box of these sitting in my garage. Just waiting for this video. Thx. 🙏
15k and 15k works BEAUTIFULLY for 13.8-14.6 volts, super steady!
REV09F ?
So you're saying that both resistors are 15k to get that voltage variance?
Rev 11F does not turn on with these values
Nice. Thanks for sharing. 73
Very good video I am fixing to do one of the these. Best video I have seen on this mod thank you very much.
Glad I could help. Get the same exact model if you can. 73
I have also done a video and used similar resistor values. I think I used a 47K because that's what I had. I like your solder point for the 20K. You are right not everybody is used to the tiny smd soldering, and that potentiometer has tiny pads. Thanks. My Video @N5BSB
This is the best video of the mod so far, Camra in focus on close up and good details.
Also looks like your pretty good at soldering.
Im gonna try this mod, i need a powersupply for tuning cars, and on some cars the fan starts, and on bmw its about 63A.
But for the most under 30A just a fuelpump and things like that starts.
Im buying 1200FB but i guess they are the almost the same.
Thanks for sharing :)
not sure if you buy another model it's gonna be the same. hard to tell. try to get the same one or check if anybody got video for the model you gonna buy. 73.
@@myszaca I will measure connections to see if they are the same 😊👍
You can hear opps from down under. Your lucky to get that most evenings.
IT POSSIBLE ... I MUST TRY IT ... 50A . WOW !! !
Great video. Thanks 👍
Thank you for your information and sharing it with the rest of us. Can you give us an update on how it's worked these few months you've been using it? I'm getting to modify one of these myself.
So far no problem, I am probably pulling daily between 18 and 55Amp on and off to run my equipment in my station. Fan kicks in sometimes in to higher speed to cool off the power supply but that's normal. I actually can't believe that I was able to find this power supply and do the mod for that cheap. Even if it works for one year it's still worth it to buy another one and do the modification again. I do not see any side effects that would cause any noise or some interference causing my Anytone 5555N II to run funny or getting RF noise etc. I did put 60A fuse with automatic reset function at the output 13.8v power supply cable just so I don't overload the power supply over that value, I just like to have that not necessary but always extra protect ion. I think that's it, nothing bad happened that I would complain about. Not sure what kind of experience other people have with it but if someone likes to add some knowledge and advice we all would appreciate it. 73 from 0767 South California.
kynar cable and SMD resistors would be nice...
Great video! I just picked up 8 of these to make 2 monsters lol have you ran into any issues with the new location for crowbar resistor?
So far I have no issues with my power supply. Works fine.
I used a think i used 22k and 47k and got 13.8 right on with no adjustment so just left it at that.
Thanks for information.....
Will this be stable if used for more than 6 hours continuously without stopping?
I don't have experience with that kind of situation. I guess those power supplies work 24/7 in servers. I guess if you get one cheap try it for what you like to use it and see what happens. If anybody has any experience with HP power supplies running them all day long please comment. 73.
Actually 1 and 4 power it up!
Jumper between 1 and 4 for power not 1 and 3
Any interference? I use all band 2M, 70cm and all over HF and need a clean RF supply. Does the fan bother you? Thanks for the video!
Don't see any interference on my side. That was a statement from BBI guy that it runs clean. So so far all good. If you run that power supply with higher current draw for a longer time it will get warm and the fan will kick in in higher rpm, I can hear it but not too bad. I installed this power supply behind the cabinet so I don't hear it too much. Like they say different stations have different experiences. If you get one for cheap try it. Maybe run it with 12v only before converting to higher voltage and see if you get any weird issues. 73.
Awesome. What are you using for a load there?
Foot Warmer from eBay 😂,🤪.
thank you i followed your instructions but at 60 amp voltage dropes to 12.89. any idea why?
Not sure why drops to 12.8v. So far mine at 55 amp sits steady at 13.8v. Is it the same exact model ? Maybe you need to put different values of the resistors to bump the nominal voltage so when you put 60 Amp load it will drop to 13.5v or so. Check comments in hear maybe someone mentioned other resistor values that they used to bump the voltage over 13.8v.
@@myszaca thank you bro .mine is rev 06f maybe 09f is different
Hi, Nice video , I recently puchased one in used condition, it seemed like every think worked fine, i have tested voltage and load on it and it worked fine, but fan does not start, i am not confirm does fan start on some ampere output value or it is not working
when you plug the power supply to the outlet watch the fan it should kick in for a second and depending on outside temp it may spin very slowly. At the end of the video I showed where the sensor should be relocated to control the fan more accurately so it cools it faster. 73
We want new movies .. new video .. new ideas
😂, good one.
I bought several of this from ebay,there all HP brand,but different watts ,Will this mod work on any of them ?
not sure about that. google your model number and maybe somone else did video for your model.
I have exactly the same part# power supply but different revision number and circuit board elements layout is very different.
maybe someone did a video with your version. 73
What was the purpose of the switch you installed on the first and forth leg vs. the permanent jumper wire Mr BBI used?
I got the switch so just in case if I want to remove wires and connect to something quickly etc I won't make a short. Up to you what you like to use, it really doesn't matter if you have a jumper or switch. To kill the power to this amp circuit board to prevent constant draw I have to switch my power cord to off position every time I am done for the day 😂 . So really one or the other works fine.
@@myszaca Okay, thank you. 😃
Any watt 1/4,1/2, 1of resistance works? I ask about the resistance watts because I use 1 watt (15k-51k), and it looks like it doesn't work. Yours look smaller. After the mod works for a minute and I reconnect the power and the fan works only at a high speed and no green led, no voltage output any help? Thank you
try 15k for both resistors!
Do you or anybody know where the 4 contact pins inside the power cable socket are for. Only the blue sockets have deze.
maybe for 220v cable version since this will run 110v or 220v
I am in Australia, 240v, do I need to change what value of the resistor to achieve 13.8v output
Good question. Honestly I have no clue. Never run that with 220v. One way to know would be to try it and see what you will get. I think input voltage doesn't matter what you gonna get on the output. You may be able to push more amps from 220V. Maybe someone in hear from Europe did that conversion and will give us some answers.
In Aus and I used 1/4w 15k and 51k resistors and got 14.4. Humming like a dream.
Many thanks to 767 and Mr BBI. Really appreciate the video.
@@peterkomninos122 Thanks for sharing. Glad that I was able to help. 73.
How did you calculate the output of this supply is capable of 70A if you raise the output from 12v to 13.8v???
I put the load on it and it was able to do it for some time. I needed max 60A so I didn't push it too hard. Plus watch videos of the MR BBI channel about this power supply, he explains all. Links in description.73
1200 Watts divide by 13.8 volts = 86.95 Amps
Question where to get input cords cheap and how much is their cost.
www.ebay.com/itm/285116561630?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=BF3VjAoYRwi&sssrc=2349624&ssuid=luhS-baRQ6u&var=&widget_ver=artemis&media=COPY
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This ones are refurbished. Can't imagine they will be bad because they are refurbished. It will give you an idea of where to look for it.
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www.ebay.com/itm/264423637554?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=aY7OL6JIRbO&sssrc=2349624&ssuid=luhS-baRQ6u&var=&widget_ver=artemis&media=COPY
1w metal film resistors can be used? what type did you use?
scroll down in comments sections I gave someone else a link to resistors I bought on Amazon. 1/4watt. I used 20 and 51 kohm resistors. when you use 15 ohm may not work. go to my links in description where I have links to BBI channel. I copied his idea and changed the resistors value to what I want and it worked,got lucky. He is mentioning other values and voltages somewhere in those two videos. start with that. If you want more then 13.8v then see his video and listen to what he says about resistor values etc. It is possible that your crowbar protection is kicking in and cutting power, not sure about that because I didn't come up with that idea. Watch his video if you need more than 13.8v output. If you put the same resistors as I did and it doesn't work then it's a hard one because diagnosing that kind of issue here is almost impossible. make sure soldering connection points are good and ohm the circuit from the leg at the transistor to the end of the leg at the 20kohm resistor or 15ohm and see if you have continuity ,not open circuit etc. I would definitely start with BBI videos and see what he is talking about resistors etc. maybe other people who did one of those had the same issue may share their experience. FYI make sure it's the same model also. 73.
@@myszaca 20k and 51k?
That Ebay seller is gone.
Maybe he is out of the power supplies already. Someone will sell them. Got to be the same model number. Good Luck and 73.
I am useing them 15 v at 100 amps each on 220v
15v will reduce the amps down to 80