LENOVO G50-30 LAPTOP with a WHITE SCREEN Fault - Trying to FIX
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- Опубліковано 29 сер 2024
- In this video I attempt to fix my brother's laptop. It has a constant white screen fault. It does however connect to another display and works fine. Is it the screen, is it a cable fault or is it a faulty GPU???? Let's fine out.
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Remember that this is just for entertainment and I am not an expert in these repairs. The processes in the video may not be the best way, the correct way or the safest way to fix these things. I do love fault finding and trying to fix broken things, so I hope that comes across in this 'Trying to FIX' series. Many thanks, Vince.
when youre using/understanding schematics, you cant claim to be an amateur anymore... its been great watching this channel and your skills grow
These days I’ve found Vince’s videos more entertaining than most content on TV 😂 They’re also educating as well
@@Pablus96 gave up TV license and cancelled sky about 12 months ago now, have no means to watch TV and stick to youtube only and you are correct, even production value alone is more often than not better than on TV. Im subscribed to over 1000 channels and have found the more you subscribe to the better the algorithm works in finding more content you will find interesting/entertaining
The previous owner was called Sinead, so it probably still has her preferences and cookies saved. That's why you got the beauty video.
Great fix Vince. Fixing a laptop or computer are not easy repairs to do.
you did a wonderful job removing that LCD bezel, I just wanted to tell you generally starting from the top is best and working down to the bottom. under the bottom side of the bezel where it rests on the screen there is usually a strip of pretty strong adhesive. be careful with that it can cause the bezel to break. I work on laptops like these all the time. and I was gonna say, it's more likely to be an LCD issue instead of a motherboard issue if the device displays out of HDMI. lastly, if it displays on an external display it generally is unrelated to the graphics chip. Good work Vince
Well done, Where to start , The screen fault is the control chip on the lcd screen that is faulty and not the lcd panel. Yes EC ( Super IO ) on this model is programmable, you can read the bios chip and extract the EC file from the bios but you would need a programmer to program the EC something like rt809f or rt 809h , I don`t think the ec was at fault here rather that the 3.3v rail was gone. I would do a bios update just to make sure the ec and bios match. Try to repair the faulty laptop would be a good video. Cheers 👍👍👍👍👍👍👍👍👍👍
Thanks for the info AR 👍👍👍👍
The white screen is most probably because of the missing VGH/VGL/VCOM/VDD on the TCON board and not because of failed ACF bonding. There will be a dc-dc converter on the PCB(on the LCD panel) . It might be failed.
My lenovo laptop shows static noise like tv whenever I try to turn it on.
Sometimes it turns on n loads up the windows but after few minutes it again shows static noise and turns off.
If u know what is the main problem in it.
Plz reply!!!
@jobitjoseph
@@samirshrestha8849faulty LCD, drivers, etc? White screen could be a faulty polarizer.
My screen goes white after 2 minutes or so but if You press gently over left ribbon area it comes to life again... Maybe adhesive got old
19:20 If you would short all the pins above the plastic separator, nothing should happen. The longer pins are Ground, as they need to be connected to the battery first. Below the plastic there are the two positive pins and the two smaller pins besides the Ground pins are most likely data lines for measuring the temperature or reading out the serial number of the battery. The plastic part is a separator to prevent plugging in the battery the wrong way and to prevent accidently shorting the contacts. It is also a bit longer, so no straight piece of metal could short the voltage to the data lines.
It could always happen, that someone is using the notebook without the battery (stationary use in schools) and a paper clip or something similar gets under it and would short it out.
Nice! 👍 Hats off to you Vince for persevering with the original one and bringing it back to life. I wonder if the LCD panel has a t-con (timing control) like a TV? If so, could it be that which failed?
Maybe Steve. I'm thinking it is the little chip on the top right of the screen purely because of where the screen is grabbed and the lines that sometimes appeared, but the bottom board may be the culprit 👍👍👍
@@Mymatevince I don't think it will be the inverter board at the bottom as they usually just supply the back-light
ALBIN
Another really enjoyed video Vince, I expect you have already done it but might be worth wrapping some insulation tape around your eye loop.
Top job
With your eye loupe, the open end is supposed to go into your eye socket where it sort of stays there like a monacle whilst you look at things, not really made to be placed down onto something. If you are wanting to use it not in your eye I would really suggest getting a plastic housed one. Plastic sets from 2x to 10x are inexpensive and most useful. I use 5x and 10x the most. A conductive metal one around electronics seems like an accident waiting to happen. Hope this helps. Love your videos. Keep up the great content.
& the moral of the story is buy a plastic eye loop 😉 (or put electrical tape round your aluminium one) 👍🏻
I saw a comment about this and I know this sounds idiotic but my HP laptop was like this, white screen no imput at all. Suggestions were, change screen or remove power chip and short it out, but this comment said this, remove battery and power cord and hold down power switch for 30 to 60 seconds replace battery and power cord and turn on and strange and silly as it sounds my screen came miraculously to life
Its worth a try will take about a few minutes and doesn't involve taking laptop apart. Great video as usual Vince wonderful
I am here from the xbox controller vid, you are great at explaining stuff, good job
awesome video Vince good to see the laptop working in the end :) nice fault finding and great shout out to Sorin :)
hey vince i also use knedles to make life easier i stripped out the copper joining blocks from a choclate joining block strip and clamp the knedles with those loosely tighten them to the probes whne kneeded.
The screws fell out of mine the exact same model, it wouldn’t boot and it turned out to be the bios battery.
I actually had the same white screen problem on my laptop once. Though it was actually the ribbon cable bonded to the on glass chip inside the panel that had developed a faulty connection. Replacing the screen was easy though, and I got a better quality one as well.
Thank you for that great video, and yes there is a chip that has failed on the screen. i had the same Problem with my Lenovo Notebook.
Hey Vince, I find that guitar picks are really handy for opening up screen bezels and other similar things. They come in different thicknesses and they aren't as damaging as are metal tools.
Some additional info that maybe helpful.
Places to look for white screen issues are the components feeding the 3.3v to the screen(lvds) cable on the motherboard.
Is 3.3v on the connector on the motherboard, yes then move to the screen. No then go backwards to the switching component feeding the cable.
On the screen iteslf if there is 3.3v on the screen pcb at the cable then look for the VCC or TST point on the screen pcb.
If no 3.3v on VCC try running a jumper wire from the 3.3v at the cable to the VCC point to see if you get picture back on the screen.
The above has worked twice for me. Once on a Lenovo and once on a HP.
On a third laptop I had to run a jumper from the connector on the motherboard to the VCC on the screen pcb and it worked but the the brightness was on full and always on.
So I had to find a 3.3v point that was only active when the laptop was awake so the screen would go off when it went to sleep or was shutdown.
Its a handy fix but most screens if the same size are swappable these days.
Really enjoy the video vince, especially the way you deliver them 👍🏻
Thanks for the tips 👍👍👍👍
If a new screen cost the same as a broken laptop, you gained spares and also some screws. Good fix
The first thing I do with a suspected screen problem is to plug in an external monitor to the laptop. On older machines a vga or a hdmi on newer. This will give you a better idea if there is a problem on the screen or the motherboard/ribbon and graphics chip. Congrats for getting it working Vince glad it did not have the graphic chip problem.
He did plug to external screen
This model doesn't have an extra GPU. It would be populated on the free pads between the WiFi module and the battery connector. The smaller ones are for VRAM and the bigger one for the GPU itself.
@@drcyb3r Hi mate. What you are saying is that not all g50-30's have the hdmi connector? I looked up the g50-30 before commenting earlier and seen a video of them connecting an external monitor to it so took it they all had hdmi capability. Here's a link to the video I watched , thanks mate.
ua-cam.com/video/QIPLQuRtkt0/v-deo.html&ab_channel=Electronet
@@boastyy I meant that only some models have a dedicated GPU installed. There is an HDMI port on both models, but it is connected to the CPUs internal graphics instead of a GPU in this model.
It depends on the exact model of the laptop how the HDMI port is connected. On models without a GPU it is always connected to the CPUs graphics. On models with a dedicated GPU there is a special IC that can switch between the CPUs graphics and the GPU.
Troubleshooting of video problems strongly depends on how the exact board of the laptop is made. There are also some laptops where you can remove the dedicated GPU for upgrades or troubleshooting.
@@drcyb3r I got you , thanks for the explanation makes perfect sense. Thanks man
I got a lenovo like that that someone had thrown away in ewaste. It had the white screen issue, but wouldn't do anything, and no external display either. I reflashed the bios chip and was able to get it to boot up, using an external screen. The internal was also broken, I think maybe someone got annoyed that the laptop wouldn't turn on and punched the screen.
I just took the whole lid off, so now I have a smart keyboard plugged into my TV :-)
his voice sounds the same from 2 years ago good to watch it again
It comes down to experience. When I first saw the starts of this video, and you had a white screen, I know it was the panel because I had seen this many times before. It could have been verified(when a person doesn't know this problem is the panel) by using an oscilloscope to test the signals going to the panel...
Maybe with aftermarket lcd controller board can you resurrect the older display as a standalone second monitor?
It appears that you are a good fixer upper ! 👍😀
Oh brilliant! What a nice entertaining video you needed a lot of spears and 60£ is brilliant even for just the screen and screws, an extra battery is soon needed to if it used daily. I have one of those as an xp machine connected to my xbox og. Battery is totally gone but dose what it needs to do and is quite and reliable!
Thank you!
Thanks Anders 👍👍
The problem of the LCD display is missing VGH voltage it shows 24 v check the following voltage VGH 24v, VDD 3.3V,VCOM check this voltage on the planel. If you need any more details check on UA-cam white screen
I seen all you're video. Great video
Have a great day.
Amazing fix Vince……I had a similar problem on a dell but was never able to get it fix…couldn’t find a schematic online that I didn’t have to pay for
My brother had the g50 too and the screws kept falling out of that one too which caused the hinge parts to crack and the casing to be ruined, I’m assuming they didn’t use any locktite
The laptop was never taken apart prior
Must admit i did think ribbon fault but you have so got this vince
In the bios, you can change the key behaviour, sometimes if changed, you dont need to push the Fn key, just brightness up/ down
Is is a bird,is it a plane !?...No it's Louperman !....good job Vince ! 😊
I'm guessing the beauty vlogger ad played because it might have been of interest to Sinead who is the user that's logged in on that laptop
To change the screen brightness right click the battery icon, mobile settings and change it there instead. Oh wait, you figured it out as I was typing.
Great video as always Vince but is your brother watching this and shouting "Arrgg! What are you doing"? Wow when I wrote this I was only about 15 minutes in, I didn't foresee what was about to happen!
Awesome! Just in time when i was looking for something entertaining to watch!
My daily laptop is a Lenovo Z50-75 I bought it faulty on eBay and it just worked after putting in a hard drive. I've updated the 720p LCD to 1080p, an SSD and 16GB of Ram and its a nippy lil bugger for a 4th gen. I paid £40 inc postage.
man i'll need to upgrade mine then
how did you get into the extend screen option if nothing is showing on the laptop screen ?
I think when it was first plugged in it was on the duplicate screen so it showed the normal desktop 👍
Nice fix Vince!
the issue was this laptop tried to show video evidence of heaven
It’s not a Trying to Fix video without somebody doing dishes in the background. 😂
G'day Vince! Would you be able to bring back the UA-cam fixers? As I loved that series
The problem with the screen not working is the display control board that's on the actual screen. They go out a good bit on the Lenovo laptops.
What a perfect way to end a school day! Wonderful video vince!
Well done Vince!
hi vince i had the same white screen issue on my dell laptop i fixed it by putting a little bit of cardboard between screen bezel and screen, When pressure was put on the LCD Screen board the screen works fine. When i removed cardboard the screen would freeze or go white. Ive heard others fixing this issue by shorting the lvd in to the 3v in on the screen connector pins if that works the use a jumper wire to keep the pins shorted.
In all of your experience with taking apart and fixing HP, Lenovo, Asus, and Dell laptops / notebooks, which would you say is the best and which is the least desirable in terms of build quality?
When having issues like this and you have confirmed that the GPU work, your next step should be to reseat the LCD cable on the motherboard 🙂
Maybe I missed it, but what exactly WAS the fix for the White Screen in the end?
Replacement of the Super IO chip, or replacing the faulty PU401 chip?
I have exactly the same problem with a recently purchased Dell Latitude E6420.
Great video! How did you come upon the schematics like that?
well done . persiverence solved this problem
i have done a tear down on one of those laptops too
Congrats on a new sub vince
27:01 If it wasn't for Vince, I'd have never have learned how to spell, "isopropyl alcohol". Thanks Vince!
Feels like it got missed.. what was the fault on the faulty ebay one?
All minor stuff. Key missing, battery issues and slightly broken power jack. The replacement would have been easier to bring back to life but I wanted to fix the initial faulty one, especially when I made it worse 👍
Thanks for great content dear Vince !!!
Vince you should get a hdmi control board for 30 and 40 pin monitors so next time you can check if the screen is working or is it a laptop problem.
The plastic cover behind the screen is quite soft and bends easily. you must be very careful when closing the screen or pressing the screen on the back
Excellent =D Bad luck with that eye loop! That's just the sort of thing that would have happened to me lol. Regards the skin cream advert - the ads are targetted based on your online profile (eg. cookies, IP address too). If your wife was looking at beauty products (or your brother in laws daughter), you may see adverts like that! I often see adverts targetted at my wife lol. That said - I think YT advertising allows them to target specific videos. Maybe the person in marketting there just didn't do their job properly lol
Grrrr I lost a lot of hours on this one with that eye loop! I was sure it had knocked out the super IO. Still not sure why a short on the battery contacts would knock out the 3V chip. Maybe it was unrelated and one of my multimeter probes caused a short unknowingly and blew up the chip. Cheers Chris, thinking about it now, my niece uses this machine so the adverts are tailored to her. 👍👍👍
Mx2V. Good times. Good times.
You don't need a spec for spec replacement screen. If you search for 30pin 15.6 inch screen you will find the replacement easy. You just need to look which side the connector is but most of them are on the same side as yours.
Great channel love it keep up the good work :) from me in Sweden
Awesome, inspiring regardless of you mentioning not 2 copy...entertainment only lol!😎
good video Vince, but this laptop belongs to the junk yard, 1 stick of ram instead of 2 to put it in dual channel mode. Still can understand why anyone will put 1 stick of ram even as an upgrade when everyone should know that 2 sticks work better. 2 sticks of 4bg works better and faster than 1 stick of 8GB and the same goes for any amount of ram. 2 sticks of the same matched ram put the machine in dual channel. just chuck in the bin and get new one with new fresh battery, new warranty, new faster NVME drive not these SATA crap from 10 years ago and hopefully a better screen too. Thank you for the video
I've killed circuit boards when probing with a multimeter. If you short adjacent pins you can blow up sensitive integrated circuits without even realizing it. Pays to start with a schematic and know what's hazardous to the device before probing blindly.
It is the shorting and not the probing that is the problem. Use a probe with a very fine tip and keep a steady hand. I have scope probes that have plastic lugs either side to help but they don't help when the pins get very close together. Then it can be a good idea to follow the track away from the pin and measure at some other component which is connected but where it is safer from short circuit.
It would be great if you could do a install and guide on smart doorbells, I've got few and none do what it says.
I don't want a ring of anything with a subscription, I want to hard wire it and my original 1950s ding dong to work.
Destroyed with an eyelupe. That's new. But at the end you got a working item. That's all what matters.
Had a G570 which is an older model off this laptop and it had issues where the screws kept falling out off the hinges
Nice fix
great video. clear explanation
I wonder, did you get the screen working again? Check for fuses on there
Big fan bro, found your tutorial on fixing a joycon rail that’s busted. Do you do orders? I would like to send a few things to ya
you need to press the FN key + brightness key to work. otherwise, your just pressing F11 or F12 for example
I wish you could do that on my laptop. My laptop has the same issue
Nice fix, i doubt it was the super i/o, probably just the mosfet pack you replaced. Why does it sound like you're working in a café kitchen in a lot of the videos with all the clatter of pots and pans at times :)
Nice save!
Thank you ser
I dont wanna be that guy but u can actually check your graphics to see if it has the ability to run graphics, go to device manager, then system devices. there you'll be able to run a test if the test fails its a no go. graphics seem good on this one if its able to cast to another monitor
it's cool to be here early
does vince reply?
Those voltages around the faulty screen seem very low. Does an inverter not need to bump up the voltage to power the screen? Most of your readings were under 1 volt. I would have expected at least 10 volts out of the 15?
Cheers Paul. Maybe, I don't know if the fault was on the actual screen or the board feeding the screen. I spent so much time on this off camera because of the eye loop incident, that I didn't think to measure voltages on the working screen. 🤦♂️ 👍👍
@@Mymatevince Hey There Vince
I have an HP Probook G3. It was a very good laptop but one day while I was in a zoom meeting the laptop just turned off and now whenever I connect the charger the screen starts flickering white. When I smelt the side of the laptop (fan outlet) it smells burnt any idea what the problem is?
Gosh, if only I know as much as you do. My laptop's screen is also white. But if I let the laptop run for about 20mins, the white screen gradually colourises and soon the screen is normal again, until I shut the comp down or the screen saver comes on. Then back to the white screen again.
One of my uncles has a laptop which developed a white screen fault and I didn't have the experience or equipment at the time, but info pointed towards reballing the GPU. He claimed it was a virus. I said find a PC repair place who knows how to hot air rework motherboards. I don't know if it ever got fixed.
usually all the laptops that I have repaired with the white screen was just a bad screen.
yes fantastic sir
Nice fix .
How do I get ads
maybe it related something to do with graphic drivers because it happens with me as well
Had same Laptop with the same dead IC :D
Why don't you buy some extra fine probe leads for your multimeter? It'd be a damn sight easier..
Wow that was awsome
How are you doing Vince? Iv made a collection of your happiest moments. Will you permit me to to share them?
my man literally out here breaking shit so he can try to fix it back
you lucked out finding that board diagram because if not the source of that 3volt rail would be a pain if not impossible to find
They are not so difficult to find. All of the sub supplies on a motherboard will have a coil associated with them and one side of that coil will be the regulated output of that sub supply. Test each and read which one has no sensible voltage. He should have done that and checked for the 3V supply before he jumped into swapping the superIO. There was no need for that at all.
Vince the GPU is never gon if a laptop gifs external display to a TV or monitor
Removing the bios battery and shorting the contacts would cause the bios settings to be lost, in most cases the computer would automatically use the default bios settings when the bios settings have been lost
My sister used to have a dell laptop, at some point she gave it to me, and i could tell that it had a dead bios battery as whenever i removed the rechargable battery with the computer unplugged and shut down (which i did during the attemps i made to open it up), the clock on the computer would revert to the default time
The laptop had Windows XP on it, and also the rechargable battery did not hold a charge by the time it was given to me, well, the laptop could only be run off the battery for a few minuites before it would need plugging in
An earthing strap to ground is standard practice in electronics repair as the repairer can build up static and easily frag a circuit.
The graphics chip is working, if it wasn't you wouldn't have a display on the TV.
the screens controller board is what failed and it caused the white screen
screen going all white , i had one that was a good screen and while fitting the bezel in place the bottom right corner got pressed little too hard and the good screen faded away to white never to work again. only made that schoolboy error once.