The GPU REPAIR GUIDE. How to fix GPU /Graphics card not detected. AMD Radeon or Nvidia
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- Опубликовано: 31 июл 2024
- Learn Electronics Repair #142
THE GPU REPAIR GUIDE - Divided into chapters, English Language
0:00:00 CHAPTER 1 - INTRO
0:01:56 CHAPTER 2 - ESSENTIAL TEST EQUIPMENT AND TOOL (PLUS SOME NICE TO HAVE)
0:18:38 CHAPTER 3 - THE LINE-UP OF SUSPECT GPUs
0:22:54 CHAPTER 4- VISUAL INSPECTION
0:31:55 CHAPTER 5 - RESISTANCE MEASUREMENTS
1:10:09 CHAPTER 6 - VOLTAGE MEASUREMENTS (THEORY ** IMPORTANT)
1:39:28 CHAPTER 7 - VOLTAGE MEASUREMENTS (PRACTICAL)
2:02:49 CHAPTER 8 - THE LIGHTS ARE ON BUT NO-ONE'S HOME
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Errata 0:40:39 - this pin is connected to ground on the ATX PSU but it is not connected to ground on the GPU - it is a sense pin to detect if an 8 way plug is inserted
Errata 0:43:25 - 12V not 5V
Errata 0:48:44 - Yes I know, I am trying to probe the coil in the wrong place!
Errata 0:52:25 - We also need to test shorts to the coils from the 12V on the PCIe connector
Errata 0:56:20 - and this is why you need to check ALL the phases of the VRM for shorts to ground. It could be possible to have a short on just this phase.
Errata 0:59:45 - The memory controller (which reads short) is part of the GPU
Errata 1:04:06 - it is also common to find a coil in this area which is actually a filter for the 12V PCIe supply, and not a buck regulator coil. In that case it will connect to the 12V PCIe and likely (to give you a clue) to have a 16V capacitor connected to it as well
Errata 1:09:17 - PEX is the 0.9V-1.0V supply rail, we'll talk about it in detail a little later
Errata 1:23:58 - On modern GPUs the BIOS is often powered from 1.8V, but on lot's of GPU it is 3.3V and on vintage ones it could be 5V
Errata 1:35:18 - This coil could also possibly be a filter on the PCIe 12V supply coming in
Errata 1:37:13 - I should say 'sometimes on either end'. It depends on the type of regulator, the input or output voltage could be on the tab
Errata 1:38:15 - IC U9 could be the 1.8V supply
Errata 1:23:58 - On modern GPUs the BIOS is often powered from 1.8V, but on lot's of GPU it is 3.3V and on vintage ones it could be 5V
Errata 1:35:18 - This coil could also possibly be a filter on the PCIe 12V supply coming in
Errata 1:37:13 - I should say 'sometimes on either end'. It depends on the type of regulator, the input or output voltage could be on the tab
Errata 1:38:15 - IC U9 could be the 1.8V supply
Errata 1:45:36 - Or the memory VRM is faulty
Errata 1:53:34 - Yeah I think I measured both ends of the same coil, instead of checking both coils
Errata 1:55:20 - I meant to say I forced to to produce an Enable signal
Errata 2:01:08 - This middle pin is probably the reference pin actually, the input voltage will probably be the left hand pin
Errata 2:01:22 - A vintage board like this may not need PEX as the main Vcore voltage is possibly high enough to handle the interface with the PCIe directly?
Associated videos
How to trace a Short Circuit on a GPU VRM
• How To Locate Short Ci...
Short Circuit tracing techniques
• Learn Electronics Repa... (part 1)
• Learn Electronics Repa... (part 2)
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0:00:00 CHAPTER 1 - INTRO
0:01:56 CHAPTER 2 - ESSENTIAL TEST EQUIPMENT AND TOOL (PLUS SOME NICE TO HAVE)
0:18:38 CHAPTER 3 - THE LINE-UP OF SUSPECT GPUs
0:22:54 CHAPTER 4- VISUAL INSPECTION
0:31:55 CHAPTER 5 - RESISTANCE MEASUREMENTS
1:10:09 CHAPTER 6 - VOLTAGE MEASUREMENTS (THEORY ** IMPORTANT)
1:39:28 CHAPTER 7 - VOLTAGE MEASUREMENTS (PRACTICAL)
2:02:49 CHAPTER 8 - THE LIGHTS ARE ON BUT NO-ONE'S HOME
This without doubt is the most ambitious video I have published so far - it's long (though divided into chapters for easier consumption). This will teach you the all the techniques you need to diagnose (and hopefully repair) any GPU that is not detected by the PC
Just for those reading this top comment, in CHAPTER8, if you are going to check BIOS, also check if GND is shorted to GND and if VCC is present or not. Flashing AMD bios is easy with software (while using another graphic card or integrated), but for Nvidia you have to remove bios chip, flash with programmer and solder back.
I recently bought a 6800XT Phantom gaming oc from a seller on facebook, tried using it only for it to crash whenever games load up, found out some of the resistors were removed, if you are willing, is there anyway I can commission you for repair?
If I thanked you a million times, even then it wouldn't be enough. By following your videos I successfully repaired my blown 1660ti and saved a lot of money. Thank you for you help, I really mean it.
THANK YOU!! Finally someone willing to share your knowledge, at length, to not only show how these cards work but WHY they work like they do. The why always makes things easier to understand. Excellent work!!
Glad it was helpful!
Saving the planet one repaired GPU (and reduced e-waste package) at a time.
Have to say I really enjoyed this video, we always see repairs being done or being attempted but never really see a logical explanation on how things can be diagnosed thanks for the upload of this great content.
🙂Thank you, This is what I do, teach how to understand the item, be it a GPU, a motherboard, PSU or whatever it happens to be. Teach people to understand how things work and then they have a much better chance to attempt their own repairs in a logical manner when it doesn't work, because they actually know what they are doing and are not poking around aimlessly. After that it just takes practice and anyone can be an expert.
This does tend to make my videos quite long, but then I think, if people don't have the patience to learn then they probably don't have the aptitude for this sort of repair anyway.
I concur! I enjoyed this video very much. Great job and thank you very much for all your effort!
Yo check out tech cemetery that kid is pretty good at explaining stuff
@@commentaccount7880 Hi, I already recommended Tech Cemetery here, and Learn Electronics Repair is on the recommended channels list at Tech Cemetery also😀
After watching countless GPU repair videos... FINALLY!! I have found an in-depth and very thoroughly explained video :) Thank you so much for imparting your knowledge to us.
Thank you for making this video, i haven’t seen anything else on RUclips nearly as great as this. Nobody else explains what they’re doing and why they are doing it in any of their repair videos. As someone interested in learning this is a great resource!
Been looking for a video like this for ages, very well explained and informative, gave me the confidence to check a few things on a graphics card that i was previously unaware of, thank you very much👍👍
This video is extraordinary. I have been actually taking notes to keep in my bench, and that's a first on youtube. The name of the channel can't be more accurate.
Thank you very much for the time invested into this masterclass.
This is the one and only channel I ever subscribed since I have an account on Google. Man, I can't thank you enough for your patience, for the way you explain things and for the willing to share your years of hard earned experience with other people. Thank you so very much.
Thanks you! I found I really enjoy making videos and teaching this stuff so there will be plenty more to come.
Another great video. I have spent much time servicing video cards before but will now learn. I am relocating so all my spare parts and equipment are in storage. I have another month to wait and time needed to reset up a new shop. I will keep watching your lessons. Thanks.
Great walkthrough and explanation of the whole process - I really feel more confident in attempting these more complex boards after watching that and the chapters will make it easier to come back to to reference any areas where I need the detail - great work 👍👍
Massive thank you Sir! Your tutorials are very detailed and brings a lot of help to me.
Took me a couple of days to watch but thoroughly enjoyed it. Nice to see someone using a scope instead of just relying on inspection and guess work. Now to watch again and make some notes!
I love the people who take time to teach and help people understand, Much thanks my good man!
Thank you so much, it is people like you who enables life long learning!
Yoo thanks big time for this! Amazing resource and something you don't really find on here, or it's very hard to. And the effort and detail you've went into. Even with the little comments and timestamps in the description to clarify things. I've subscribed and will be back for many more videos.
Great work mate!
Glad you enjoy it! Lot's more to come
Thank you so much, exactly what I needed, thank you for the time you spend on this 🙏
Absolutely your best video yet! I'll be saving this one
Thank you for the time you put into this. I am hoping to learn from you and fix my old EVGA GTX 680 graphics card I bought it used and as soon as I ran a test on it the card went out.
I am one of the ones to watch this video all the way through one time so far but it has helped me to check my card and I am starting to understand how it all works a bit at a time. Thanks again.
Great video, very in-depth! I have enjoyed quite a few of your videos. You are extremely knowledgeable and deserve way more subscribers than you currently have. Thank you for all your info!
I am 60 years old and I have been repairing electronic equipment since I was 18, you never know everything and this channel gives me very interesting things every time I watch an episode, you are very didactic, very calm explaining and you can see the years of experience everywhere, continue So, don't get tired, there is a generation of very young people who want to do this job and without a doubt a channel like this is very lucrative for them, but the older ones also always learn things, thank you for your work.
Thank you so much for sharing your knowledge. I learned a lot of things that I always need about troubleshooting.
Amazing video!. Full of information. It´s going to take me several views to incorporate everything. Thank you so match for sharing this and don´t hesitate in doing very focus and deep videos like this or even deeper like analize every rail or things like that. I think the ones who are here like me aren´t looking for "fix your graphic card with a hair dryer", we are studing and trying to learn and understand electronics You´ve got a new happy suscriber. Thank you a lot and cheers from Uruguay!!!.
I was looking for a guide like this, great video, thank you so much !!
Great video. Watched it all the way through. Great explanations of all the different parts. Thanks again
Thank you so much for posting this video, it was awesome! Such an informative bit of content with loads of great info and tips from someone that does this sort of work, clearly!
Glad you enjoyed it!
Fantastic video! Thank you so much for sharing this information. I wouldn't know where to start without such well organized and detailed information.
The effort you put into this video really shows. Top notch :)
An easily approachable guide to the art and science of GPU repair. Thank you very much!
You are welcome!
Thank you is certainly not enough. If I were close bay, there was a pint waiting for you every evening in your pub. What you do here is pure gold for those who want to learn something.
Really good video, well explained and put together!
This is outstanding education material. Thanks for sharing your extensive knowledge. I liked and subscribded, obviously.
Thanks for the video Richard! Very useful as Always. Keep up with the good work!
My pleasure!
I absolutely love this video, immediately the thorough tool lineup has revealed i've been using all the wrong tools tools for the job. I've immediately become aware that the cheaper tools simply don't work for gpu and motherboard repair. I've used them to repair tablets and monitors, but the pc components are clearly built different. My suggestion is to not ignore having the right tools for the job! Subscribed before the video is even half way through!
Best ever gpu repair guide on yt. Nice work sir. Subscribed.
Very helpful. This video is going straight into the "poolroom". Thanks so much!
I don't have a GPU to fix right now, but I appreciate you sharing your knowledge to those of us who want to learn.
Thank you for taking the time to do this. Going to watch this again. And make notes for reference. for the day i get a card to work on.
Glad it was helpful!
great video its nice to have you sharing knowledge i was beginning to think nvidia and amd did not want to give up the workings of GPUZ there isnt alot of teachers out there much respect for sharing some knowledge and experiences!, and very in dept.,
Great initiative and great job, thanks Richard!
Wow that was great, thank you. Not only did I watch it but I know I am going to have to watch it again to really digest everything.
Glad you enjoyed it!
I've only watched 1 minute of this, and already I love it!! Well done old chap! That's my evenings viewing sorted out!!
Thank You
@@LearnElectronicsRepair Watched the whole thing. Will need some re-watching as I am starting from quite a low level, but wow! I understand SO much more now. I think a print out of the sequence graph is going to happen AND that idea of taking a photo and marking what's what on the board is excellent. Doing on every board one works on would give a great archive for future work. Super! Thanks so much!
Best diagnostics vid I`ve ever watched. Fabulous.
Thumbs up for putting this information all together. Especially chapter 8 was new to me, a goldmine! Please consider making a video about motherboards diagnostics too.
That would be a good idea, something for the future.
This video is a pure treasure, thank you!
Very thankful for you making this video, very informative.
Rly like your style
I Tinker with Electronics for a while now and I study this stuff in my free time
This is a great help to improve my intrest ^^
Greetings from Germany
Amazing video. The most comprehensive one I've seen.
Cheers! A lot of subscribers really liked this one - and I really enjoyed making it too
Wow, excellent video. Exactly what I was looking for.
Really enjoyed this and learned a lot from it, Really easy to follow and digest. Thank you richard.
Glad you enjoyed it
realy nice video with clear explanations on the power on cycle thanks for shareing looking forward to watching the others.
Wow Richard!!! What a mind blowing experience to watch the full episode!! What a knowledge, and thats just the start 👌 and all that in understandable language for someone who is not an expert in electronics 😅 it makes me want to get some gear and diagnose my broken GPU i just bought and found out to be broken...... and oops i broke the rule in the first lesson...... (Don't) stick it in the PC and fire it up to see what it does..... and yes it made matters worse..... 😢
Thanks Richard!
Marvelous. How am i only discovering this channel now? Richard is the real deal.
your explanations are perfect, thank you very much for your videos, greetings from Spain
Wonderful vid with great explanations
You've earned a new subscriber good sir. Thanks for sharing your knowledge!
Welcome to the channel 🙂
Thank you for the very informative and interesting guide of repairing video cards! THANK YOU)
such an awesome video for anyone learning repairs :)
Heya, I love those long indept videos you can learn so much from them
love the content i just subscribed jeep this stuff up so we can keep learnig how to do stuff
Thank you so much for your effort.Great video!
Very interesting video. Can't do this work as I can't see well enough at 65. Thoroughly enjoyed.
This video is amazing. I am working as a programmer but I really need so much to learn these things and everything about electronics. I decided to learn and study everything in electronics myself in the evening everyday after my job. Keep up the good work for humanity.
Strangely enough - I worked professionally as an electronics repair engineer for about 7 years, then went into computer programming where I earned about 50% more money per hour for an easier job (from personal experience) for three years but I just wasn't happy with life so then I went back to working in electronics repair as I found programming too boring and repair more challenging and interesting. I made less money but I was much happier doing repair work. After a couple years of that I went self employed instead which, again from experience, is the ultimate combination of doing something interesting and making more money than a paid job, even in programming.
@@LearnElectronicsRepair You are absolutely right, after 8 years working as a programmer and me too picked out programming because of the payment as I was from a poor family, programming gives me everything I needed before and a stable good salary, but I started to think that I want to learn and do what I really wanted before, life is not all about money after all. I have a good salary as a C# programmer rightnow but I am not that happy because I like electronics, welding, making things from woods, so I decided to start to learn and do these things in the evenings and in the weekend. Thanks man you are really motivated me
Hello my old mate, I love your work mate, keep it going !!!!
Thanks, will do!
You're an amazing teacher! Thank youuuu~!
Thank you for sharing the knowledge, you have helped me understand graphics cards a bit better.
You're Welcome
Excellent video mate I learned a lot. Thanks for sending me this video in the comments of mine. I will reference to you on my future GPU repair videos. Cheers subbed. 🤙
@brettwatty101
You're welcome - I know this video helped a lot of people.
Guys I found this small repair channel, he's doing some GPU repair now
Check him out
ruclips.net/user/brettwatty101videos
Most informative electronics channel i have found
Do more of these, it's awesome stuff
Holy boy, this is gold!
Wow thanks so much for this!
really nice and helpful video, i was amazed by your skills! thank you
You're very welcome!
Subscribed and will soon watch the whole thing. Thank you so much!
Welcome aboard!
Thank you. I'll make the time to learn.
Great video you taught me a lot thank you
Very nice detailed video it helped me alot.
i like this kind of content , good job man
You're Welcome.
Thank you a lot Best video ever and you are a good profesor
Thank you very much for everything you do. I'm enjoying all your videos and learning a lot! I'm just a happy knowledge-thirsty amateur who is in the beginning of learning electronics. It started with a broken PSU... I understand almost everything in this session, why and how. But why diode-mode on measuring PCIe? (2:15:22)
Måns from Sweden
Great stuff. Thank you very much.
Excellent video, thank you. It would be nice if you could do a motherboard repair guide too in the future.
Noted. The motherboards are more complex and less generic (almost all GPUs are basically 'the same') but I would like to have a go at that at some time in the future
Wow ! You made my day !
The last part would be more than interesting for me. The request part, the logic between you´ve mentioned in the last minute of this video. I hope you will do it in one of your next videos.
Complete tutorial for checking vga that i know so good work sir. Thanks for all knowledge and good for your business
You're Welcome
terimakasi banyak pak video tutorial yang sangat luar biasa ini , mohon maaf sebelumnya saya adalah orang dari asia yang tidak bisa berbahasa inggris 😂 namun dengan terjemahan di youtube informasi dan ilmu yang anda sampaikan dari video ini bisa saya serap dan pahami sepenuhnya , saya salah seorang penggemar baru anda yang menonton video ini dari awal sampai akhir, ini adalah video tutorial dengan durasi terpanjang yang pernah saya tonton , saya seorang pemula di bidang reparasi elektronik dan sangat berminat dalam memperbaiki sebuah graphic card , bertahun - tahun saya mencari informasi sperti ini dan baru sekarang saya bisa menemukan nya di saluran youtube anda , sekali lagi Terimakasi banyak pak atas ilmu nya 🙏 semoga anda dan keluarga selalu dalam lindungan Tuhan dan di beri kesehatan & kesuksesan .
Hiii richard you are a God this kind of vid is very valuable to many people who are learning and thanks again for this vid I hope you create more vid about repairs.
My pleasure! And yes that's what I intend to do :D
Thank you so much really good help to go deep into electronics
You're welcome!
You are very right about the last hot air workstation. I have tried to remove a burnt out mosfet , but only the top came off.
What a fantastic video!
Thank you very much!
Excelent video. thank you!
Glad it was helpful!
Wow this is really good, thank you =D
I'm glad you like it
I am not interested in electronic at all. Just my graphic card 1.8v power regulator chip has gone, as I found reading through forums (as soon as I underclock the card, it works perfectly!). I found your video. Ok. This is not guide.. this is engineering university course! My bow to you sir, to share your skills and knowledge here, in the ocean full of wasteful videos. So elaborate video, huge effort to explain it even to me, who know just how to do the socket circuit in the house, or max two way light switch. You actually learned me how to use multimeter too! Once again, huge thanks!
I been looking for this
Thank you very much for this good work, i would like to ask a question, what are the most common types of those 3/6/5 pins logic components that are a must have in the components inventory?
Yes they are essential to keep in stock for GPU repair NC7SZ08P5X very common type
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Not expensive either
Awesome video
very good video sr!( MIL GRACIAS) 10/10! . in the graffic of voltage , you forget the mvdd pwm control. the vram have a similar vrm too! vram is controled by another pwm circuit.
Thanks for the info
Thanks so much !
Great video, thnx for your channel. Could you provide some books about the electronics of graphic cards if there are any out there or how did you get so knowledgeable about this topic?
Best regards
AWESOME VIDEO !!! thank you ... first time i put a comment on a youtube video ..
Thank you!