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GPU repair viability

sgoaty

sgoaty

sgoaty

Soldato
Joined
30 Jan 2005
Posts
4,058
Location
Inverness
I bought an xfx Merc 6800xt off the MM here at the start of last year it came with a water block and the original air cooler I refitted the air cooler and it's been in his system ever since.

Yesterday he turned it on and there's no display out. We swapped it with another card and got a display so it looks like it has to be the GPU.

I've read that the solder joints on the memory is prone to failing but wondering if it's worth trying to get a card of this age repaired or if it would be more expensive than the card is worth?

And if anyone can recommend anywhere to send it?

I could try the old oven trick but I'd rather it was a more reliable repair.
Thanks
Scott
 
sgoaty said:
I bought an xfx Merc 6800xt off the MM here at the start of last year it came with a water block and the original air cooler I refitted the air cooler and it's been in his system ever since.

Yesterday he turned it on and there's no display out. We swapped it with another card and got a display so it looks like it has to be the GPU.

I've read that the solder joints on the memory is prone to failing but wondering if it's worth trying to get a card of this age repaired or if it would be more expensive than the card is worth?

And if anyone can recommend anywhere to send it?

I could try the old oven trick but I'd rather it was a more reliable repair.
Thanks
Scott
Click to expand...
You could try ALB repairs maybe? But first I'd try a different cable and different hdmi or display port on the GPU?
 
I've not laid hands on the GPU yet as my son doesn't live with me but he said he's tried multi ports on it. He tried to fit it to his sister's PC to check but the case was too small unfortunately.
 
Have hands on the card now and it's definitely goosed. Have contacted ALB and repair cost is a minimum of £144 plus postage both ways it's starting to put it into unviable territory I think
 
£50 B-Hawk Gaming charged me + post both ways

Worked for a bit and then failed again.

Sent it back to them, they tried again but it must have ultimately failed because i remember selling the card as parts only.
 
I bought a digital microscope for a pin repair recently so I'm quite tempted to have a go myself especially as it turns out this particular model is prone to a specific resistor failing.

 
First thing I would do is, if you have an iGPU, use that and see if you can see the 6800xt coming up in the system.

I've got a 7900xt here with an issue where it works as a secondary GPU pulling full wattage etc but having it as primary it fails to boot into windows. Assuming it is failing at driver loading within windows.

Next thing ideally would be to inspect the components under your scope then move onto resistance and then voltage rail tests.

I would try with an iGPU first to see if it is recognised at all.
 
Last edited:
dave28 said:
£50 B-Hawk Gaming charged me + post both ways

Worked for a bit and then failed again.

Sent it back to them, they tried again but it must have ultimately failed because i remember selling the card as parts only.
Click to expand...
I sent my first card there. The guy was pretty detailed but gave up after he still didn't get the result after replacing the components. He just said I assume a core or ram fault. I'm not so convinced as the 7000 series brings up voltages by firmware I believe. I've just not got back to looking at that card yet.
 
sgoaty said:
I did try it in a system with igpu last night and it's completely unrecognised unfortunately.
Click to expand...
Do the fans spin up at all or twitch?

I would actually start checking resistances if you have a multimeter. Check the PCIE for 12v short and 3.3v. There are videos that show how to check resistances on the card before powering up.
 
michty_me said:
I sent my first card there. The guy was pretty detailed but gave up after he still didn't get the result after replacing the components. He just said I assume a core or ram fault. I'm not so convinced as the 7000 series brings up voltages by firmware I believe. I've just not got back to looking at that card yet.
Click to expand...

To be 100% honest I think it is one man in his bedroom doing it as a side hustle, hence the very reasonable prices.
That it what he told me, that it probably needed a re-core or something along those lines.
 
I would offer to help but at the minute, the test bench is out of commission and haven't tested the further test unit in any GPU yet so don't want to trial it on someone else's.
Let me dig out the rx470 as the trial then can maybe take a further look into assisting.
 
I've ordered the suspected resistor (£2 for 20) and I'll try and get the cooler off in the next couple of days and test to see if it is in fact that one that's the problem.
 
sgoaty said:
Have hands on the card now and it's definitely goosed. Have contacted ALB and repair cost is a minimum of £144 plus postage both ways it's starting to put it into unviable territory I think
Click to expand...
Yeah that is a bit steep for a 6800XT. Many places don't repair cards that are less than £300 as it's not worth it
 
I've taken the cooler off and can't see anything. The PCB also looks quite different to the one on the linked video so possibly a different revision without the common resistor fault
 
I gave it as much as a look over as I could but i think i'll just to admit I'm out of my depth. I cleaned it with isopropyl alcohol, refitted the cooler and tried it still not working only thing I noticed is that there is a little heat from the core so it is getting power. I think it'll be getting listed as faulty on Ebay.
 
Thank you very much for the offer it's my son's card he's ended up with the 3080 ti I bought a couple of months ago. I've given him his 6800xt back for eBay. I'll ask him if though as he's in Strichen so only an hour from you.
 
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