PART 5 - Graphics Card Step By Step Fault Finding Guide - How To Repair GPU Faulty / Not Found

[@Hereford1642]

Hi could you please follow up this video with part 6. Its been great watching you work on graphics cards. Thanks Jack

[@Dutch_off_grid_homesteading]

Heya, love these series of fault finding very clear and untherstandable explanation how to find the fault

[@pwal8468]

Hi Richard. Hoping that you do a part 6 here. Thanks. Paul

[@AliensInc.]

Really eager to get next ep. as I got 2 GPUs home not working, would be cool to fix at least one for a server later.

[@matthewseymour5165]

Often wondered. What is the bit of kit in the background to the left of your vids

[@PileOfEmptyTapes]

The "no beep" card is a bit of a mystery. I imagine the system sees it and tries to use it but goes belly up in the process. Something screwed up with the bus interface? Corrupt VBIOS? Flaky PEX voltage under load? I'd query the POST code reader.

[@christopherjackson2157]

I think ur right, the Post card is called for. It almost looks like a software hangup to me, motherboard bios failing to communicate with gpu, or vice versa.

[@elvisdumbledore6018]

When is the part 6 coming ???

[@nigelfewster]

Another great video , it’s like searching for buried treasure. Hope you get one or more working. I am not qualified enough to suggest your next step I will leave that to others.

[@joongsoo77]

Sir! I want the 6th video. Thank you for your hard work.

[@charlesnefdt7783]

why was the en signal not checked on the ncp controller?

[@Reksterlord]

If you turn on/off a graphics for testing do you do that as well for the motherboard of the pc or only for the gpu card?

[@ronakbhanushali8753]

Love from india sir, I encountered the same issue on 750ti as soon as I clean driver ic with alcohol the VCore comes up and after sometime if I re try the vcore is missing. I feel the driver ic is a problem. Let me know please if you have already identified the issue on first card. Regarding the second card I have RX 580 where all the voltages are present but still no display, not sure but I feel bios is the issue and currently don't have bios programmer to check

[@andrewtucker6325]

Hi Richard do you have a link to the pci extension for testing please?i can't seem to find the same one

[@LearnElectronicsRepair]

www.aliexpress.com/item/1005006149221660.html

[@nikolaskallianiotis8622]

I see behind you a BGA rework station and you know that a GPU especially the power and heat beasts of todays GPU usually need a core reballing. Watching Tony's (NorthWestRepair) channels I see that 6 of 10 GPUs require re-balling due to broken solder joints as a result of heat or mechanical damage. So long story short, would you show us a re-balling using the machine behind you ?

[@LearnElectronicsRepair]

Yes if there are no other reasons for the fault found first, I like to think as that as the last resort

[@stefanl5183]

@@LearnElectronicsRepair If solder joints failing as a result of mechanical stress causes the majority of GPU failures, wouldn't that mean used gaming cards might be as much prone to failure if not more so, than mining cards? Think about it. A mining card runs at consistent load 24/7. A gaming card does not. A gaming card experiences a lot of fluctuation in load. That should translate into more mechanical stress due to expansion and contraction related to temperature, should it not? So, what do you see higher failure rates in, used gaming cards or used mining cards?

[@ch.wey.4406]

Can´t await the next video. Wasted 20 hours with an RTX 3070 ... the same behavior. Reballed the GPU and all VRAM chips, checked everything. I´ve inspected all the solder pads before I replaced the GPU and the VRAM chips. I flashed the BIOS chips with my programmer - nothing! ... I think my PEX section of my GPU is faulty. I have 1,2 A for 30-60 sec and then nothing more. When I removed the VRAM chips I may have grilled the PEX section in the GPU?! ... I hope you will upload the next video soon.

[@michaelboth6844]

Next I would try to reflash the VGABIOS ROM with a programmer adapter on the two cards with all the voltages present.

[@nikolaskallianiotis8622]

Next, take a bootable disk with the MATS/MODS tools see if the cards are being detected and perform memory tests and I really hope to see you using the BGA rework station.

[@LearnElectronicsRepair]

Yeah that is what I was planning in Part 5, plus testing if the two cards detect as a second GPA in Linux and Windows

[@jimle22]

Could one of the caps be open?

[@poco9964]

Where is part 6?

[@SkippiiKai]

With the two graphics cards behaving differently, the problem is obvious: one of them has a bad piezo speaker. Disconnect the speaker on the other one, and then they'll both behave the same.

[@LearnElectronicsRepair]

There are no piezo speakers on the graphics cards 🤔

[@stefanl5183]

@@LearnElectronicsRepair I hope the original poster here is trying to be humorous. Anyway, it's obvious that the card in question is somehow causing the CPU to hang either when it queries the card of when it loads and executes the Vbios.. Could it be a corrupt Vbios issue? Or a UEFI vs BIOS conflict? Does this particular board expect a legacy Vbios or does it need a UEFI Vbios? Might be worth trying to see if the board will boot with the onboard video set to primary and the PCIE card as a secondary card. That would at least indicate whether the CPU is hanging because of a software issue like a corrupt Vbios or some sort of conflict, or whether there's actually some sort of physical problem with the PCIe interface that's hanging the CPU. Next step after that would be seeing if the OS sees a PCIe device, and finally try and load the driver.

[@Lightrunner.]

Ohhh, in my reflow oven is a pizza 😱😳🥳😍😍😍😍

[@atunguyd]

Another person here looking for part 6 what happened?

[@ranasaqib1]

Gtx 1660 guide

[@14kEletrônica]

E o video 6?

[@ranasaqib1]

6th part

[@BigBoss-rh7zq]

I think you are posting too many videos. You risk an over-exposure. I like your videos though.

[@LearnElectronicsRepair]

I've always posted about 16-20 videos per month on LER. I actually posted 35 videos in the first month I started the channel, then slowed down a bit. This seems pretty much in line with other repair channels like Electronics Repair School (21 vids last four weeks) and Haseeb Electronics (17 vids) so I kinda assumed it was about the right level, but just looking now most other repair channels seem to be posting less frequently. To be honest I think you are the first one to ever say I may be posting too many videos so what do others think? At the moment I'm trying to aim for a video every other day, and then may slot an extra one or two in depending what I have in the workshop and how I am feeling. I also do the bi-weekly live stream with Detlef and Carlos on The Electronics Channel (next one this coming Sunday 5pm GMT). Then there is *Gran Canaria Uncovered* which I run with Detlef and Julie and we publish every couple of weeks or thereabouts, but it's Winter Pride starting Monday with seven nights of free concerts and a big parade so I expect there will be quite a bit to do on that channel for a week or so. Non of us on the GCU crew are gay by the way, but we do know where there is good party nightlife to film. Don't worry I expected to publish a lot more on GCU next week so I've built up a stash over the last couple of weeks and already have enough videos recorded to keep this channel publishing every other day until 12th November, even if I don't make more before then.

[@BigBoss-rh7zq]

@@LearnElectronicsRepair Thank you for the long and complete answer. It is just my feeling. I like how you rapair your stuff. I visit KZbin once a day and everyday i see a new posted video from you. It may be a consuming work. I think that 10 to 15 max per month could be a good number with lenght no longher then 40-50 min. But this is just an opinion. Please go ahead with your schedule. Ciao.

[@LearnElectronicsRepair]

@@BigBoss-rh7zq We are all entitled to feelings here. Personally I find posting every day is too much for me to handle long term, I can go along for a couple of weeks or so posting say six times a week, but eventually I have to slow down after a while and drop back to one video every two days. That's pretty much same as 15 a month 🙂 October I posted 20 videos which is unusually high for me, but I did make a choice to try and publish more that month as it's a good one for advertisers. I do try to keep videos to 45 mins or less though obviously a few go over that. If they get much over an hour I tend to split them into a part 1 & 2 nowadays.

[@BrendonReid-l7t]

Richard I think your posting rate should be determined by what makes you happy, if you feel like you have more to say, get them out while you can, if creating all this content is tiring you out, pull back a bit. You are the only channel I watch on KZbin and have learnt so much from you - just do what feels right !