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.
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!! 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!!
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.
@@commentaccount7880 Hi, I already recommended Tech Cemetery here, and Learn Electronics Repair is on the recommended channels list at Tech Cemetery also😀
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.
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.
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 RU-vid 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!
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.
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!
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 👍👍
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.
@@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!
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👍👍
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.
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
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!
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!!!.
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!
Thank you very much for your contribution to the global technical community. Anyone who already has a good foundation in electronics will certainly add knowledge about GPUs with their explanations, which are perhaps one of the few really detailed ones here on RU-vid and much better than some paid courses. Understanding the sequence and operation of equipment is essential for diagnosing defects.
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 .
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!
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 ru-vid.comvideos
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!
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.,
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
Sir thank you. Following your steps i was able to trace faulty buck converter. How ever, it was only possible because i had boardview and schematic. Otherwise i would not be so lucky without experience.
@Tony Nameless Well done. Boardview/Schematics always help but you can also do this by looking up the part numbers of the VRM controllers and finding the datasheets. Armed with just a datasheet you can diagnose a faulty VRM. There is a very large collection of free schematics on the Discord server. Learn Electronics Repair is now on Discord! Come and join the fun and let's fix stuff together, it's free and a nice place to be. discord.gg/vam6YC8vwU
Thank you for the informative video really appreciated m please note that in minute 48:42, you are not touching the coil connector with probe , you touch the side of the coil
Thank you for this information , you helped me ( plus reddit) to find the problem with my GPU (1050ti). I just want to add : i found all voltages on the gpu , they were fine but does't get detected , after i flashed the flash it gets detected after a 30 second or so but blank screen with monitor backlight ON . I ran a memory test with mats (Mats and mods from nvidia) and i found out that one of the memory banks had errors , I'm going to replace it soon and update the result . I hope this helps someone fix there gpu also . Have a good day
Nice work - let us know how it goes once you got the replacement parts. This symptom: it gets detected after a 30 second or so but blank screen with monitor backlight ON . is very typical of faulty Vram on Nvidea cards
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
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.
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.
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!
2:07:50 R series card still present as video controllers in Windows even when the BIOS is wiped out, unfortunately you still have to write the BIOS manually.
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
WoW now that is an honour. Thank you Tech Cemetary - I don't think anyone knows as much about GPU repair as you do. I take that as a real compliment . Now where is that blushing emoticon when I really need it?😮
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!
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
Hi Richard, I find your videos very helpful as you show in great detail how to repair electronics (PC hardware). A long time ago, I also decided to repair hardware myself (with good success as a hobby), so that the defective/declared defective devices can find a new use. For most of the repair cases I also found good videos and thus was able to repair some hardware, but when I luckily came across your channel I was able to learn how to find and use boardview files etc . But now after the very detailed video on video card repair I wanted to ask if you could maybe post a video / video series on how to repair motherboards that don't get power (describe most cases why a motherboard doesn't work and how to repair them using boardview files / schematics) (because I still have some motherboards, especially Gigabyte motherboards that don't get power). I already have many Boardview files, but unfortunately I can't open them all properly. I hope you read my comment and reply to me 😄
Hi. yes I will do more motherboard repairs when I have some good examples to make videos, several people have asked for this. it is more complex than GPU repair but I can try my best. The boardview files that you can't open, what is the file extension?
@@LearnElectronicsRepair Hi Richard, thanks for your quick reply. I would be very happy if more motherboard repair videos would come. (I'm very excited about the video card videos because I've never repaired one before) I'm not at home right now but I guess the extension name / file type was .asc. I can already open my files up to a certain point but I don't see all the components of the motherboards. Do you have any solutions? (got most of the files from the Badcaps forum, as you mentioned as the best source for boardview files).
As it goes, since I first watched this video in 2022, Rich, I've added the Atten 862 to my Quick 861 (so my 17yr old son can have his own bench) - Your are correct in your assumption. I find the performance hard to separate between them. 15:00
Hello Richard, I've been trying to find someone with your level of knowledge to look at my gpu... Would you be interested in doing a repair on an RTX 3080 Ti or would you be able to recommend someone with your time in the industry? Thanks
Thank you for the video, there's very useful information in it. I'm currently attempting to repair my RX Vega 64, and i already notice no voltages on any rails except on the 5V regulators. There's 0V on every voltage controller's enable pins, except for 0.8V rail one where i read 0.2V on the enable pin. I suspect it may lead to the logic you mentioned.
The schematic for the RX Vega 64 (Asus) is on the LER discord server - you can download it there. Your board will most likely be very similar to the Asus schematic even if it is a different brand The power sequence chart for RX Vega 64 is also on the discord server. If you have 5V present, you must also have 12V and 3.3V present. It is possible your GPU has two 5V supply rails (one powered from 12V on PCIe and the other powered from 12V EATX 6/8way connector) so you also need to keep that in mind. The next two supplies to come up after 5V on your card are 1.8V and 0.8V (PEX) I hope that helps you diagnose it further Learn Electronics Repair is now on Discord! Come and join the fun and let's fix stuff together, it's free and a nice place to be. discord.gg/vam6YC8vwU
@@LearnElectronicsRepair I'm looking at it right now, but i have however a reference card and i notice some differences in component references and ID's with the ASUS Schematic. It's still better than no schematic at all. Cheers!
Thank you for posting this. I have piles of RX470s and 570s that won't detect. This is giving me hope of trouble shooting them, but I think it might be outside the scope of my ability so not sure what to do with all these GPUs!
Follow as many of the steps as you can, if you have many of the same type, compare resistances, it may help you weed a few out if they are different from the majority. I rarely need to use an oscilloscope myself, as you will notice from my videos
Thank you, I really learned a lot. And after carefully listening to everything you said, I've come to the conclusion that my graphics card's GPU (GTX 970) itself is damaged. I got different readings on the PCI-E pairs. The card boots well and it's recognized, but in less than a minute after the driver is installed, I get artifacts, then a blank coloured screen then a restart. Also, from your experience, which of these manufacturers have the best quality of components and reliability? : Asus, Gigabyte, MSI, Zotac?
@@LearnElectronicsRepair I carefully tried to reflow the GPU with a heat gun while monitoring the temps with a thermometer but to no avail. But I was trying something just out of curiosity which is shorting some of the capacitors with tweezers on the GPU chip while keeping the multimeter probe on the two PCI-E pairs that gave me high reading, the reading dropped when I did that. So could it be faulty caps? I'm probably talking nonsense but I'm just an amateur who's desperate to fix the card as I'm broke.
@@LearnElectronicsRepair Hello Sir! I wanted to update you about my card for the greater good, I can't believe what I just did. I FIXED THE CARD, simply by flashing the factory BIOS (multiple times) I got from TechPowerUP. I found out the that the BIOS chip isn't that healthy. After learning a lot from other videos and your videos I wanted to say thank you so much.
I guess this comes down to personal preference and familiarity. I bought my KSGER T12 station 'second hand unused' with about 20 tips including two knife tips of different size, but never got round to using them. I work almost always with BC3, and very occasionally BC1 and a bent conical tip. here is a very good example ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-t-NpkiLlpok.html In this video you can see me using a big chunky BC3 to do micro-soldering on a SOT23-6 IC. Note the way I turn the tip upside down and use the angled edge of the tip at 32:00 and especially at 33:35 for fine work I find the large BC3 gives the best thermal transfer and you can see also how I used the chiselled edge when required for fine soldering, but use the same tip in a totally different way to tackle an SMD capacitor at 25:50.
