N5010 high temp behind VGA

[John_F_L]

Hello, I have 2 Dell Inspiron N5010 which are shutting down after max 30 seconds.
On both there was no image on the screen. On the first one I just reballed the same GPU but on the seconds I changed it with a new one. On both boards there is great heat on these caps C8383, C8371, C8370 and the resistance to ground on them is 10.8ohms.
On the one that I changed the BGA, the customer had reflowed the GPU for 5-6 times. I already tried to reball them again.
Anything else I should try??? I cannot find any short circuit.

[polytek]

Re: N5010 high temp behind VGA

Hi,
first check the bios version i think the latest is A12.
second on the ati there is silicon thermal pad and not termal paste, silicon is 1mm.
and finally check if your ic of 3v/5v goes hot if yes change it.
good luck, i know this motherboard is very bad.

[John_F_L]

Re: N5010 high temp behind VGA

bios version is A12.
on the ATI i put thermal paste instead of thermal pad for better heat dissipation.
And last the IC 3v/5v is getting hot, I replaced it but the same result.

[John_F_L]

Re: N5010 high temp behind VGA

After the second replacement of the IC with a TPS51125 (didn't have another RT8205) the laptop works. Right now i'm running VGA diagnostic tool for about 20minutes and it's working without shutting down.
Probably the 3v/5v IC was the problem.

[polytek]

Re: N5010 high temp behind VGA

After the second replacement of the IC with a TPS51125 (didn't have another RT8205) the laptop works. Right now i'm running VGA diagnostic tool for about 20minutes and it's working without shutting down.
Probably the 3v/5v IC was the problem.

I'm glad to hear that, from you. good work

[Th3_uN1Qu3]

Re: N5010 high temp behind VGA

Be aware that N5010 needs copper shim 1mm on GPU, the heatsink mount is poor (only 1 mounting screw) and over time the heatsink separates from the GPU hence why it dies. I have done over 20 of them along the years and not a single one came back.