T61 GPU sudden death?

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wujstefan · #1 Post by **wujstefan** » Wed Mar 22, 2017 5:01 am

A friend of mine just dropped in yesterday with his old frankie (15,1", SHARP UXGA, safe date nvs140m undervolted to 0,95V), saying that the display won't turn up. Since it produced no beeping sounds I replaced it quickly with an old XGA I keep just for testing that I'm sure is 100% working. This is what I've got (pictures!):

https://drive.google.com/open?id=0B2p58 ... EVGd0Z3NGc
https://drive.google.com/open?id=0B2p58 ... nhHOTJRNXM

I think I've seen something very similiar when my A31p died, and it seems it was VRAM problem.
I'd be happy to hear your thoughts.

#2 Post by **RealBlackStuff** » Wed Mar 22, 2017 6:54 am

Looks very much like a dying GPU, but to be absolutely sure, try another inverter, since they can "burn up" over time.
In my LED-mods the inverter-transformer has to be removed, because it overheats from non-use.
A ~10-year old inverter might also have reached the end of its useful life.

wujstefan · #3 Post by **wujstefan** » Wed Mar 22, 2017 6:56 am

These photos are made after swapping the inverter as well - forgot to tell.

axur-delmeria · #4 Post by **axur-delmeria** » Wed Mar 22, 2017 7:09 am

Yes, It does look like a VRAM issue, but there's the off-chance that it could be the system RAM. Try a different RAM stick?

SaskFellow · #5 Post by **SaskFellow** » Sun Mar 26, 2017 6:39 pm

axur-delmeria wrote:Yes, It does look like a VRAM issue, but there's the off-chance that it could be the system RAM. Try a different RAM stick?

I'm with this guy, that's definitely a memory problem.

T61 GPU sudden death?

T61 GPU sudden death?

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