Acer Nitro 5 LA-H501P GTX 1650 - GPU not working

[magneh]

Hey guys

Got this machine that works 100% on intel graphics but does not see the Nvidia GPU.
When I try to install drivers, it says no Nvidia GPU detected.
Nothing on device manager.

Ive measured the coils around the GPU when machine is at login screen and I have PEX 1.8V , 1.5V for the VRAM and GPU coils have 0.29V which I find low but maybe normal when no load.

For more experience guys, what can I check or measure in this situation?
Not much to be done?

Any inputs are appreciated.
Cheers,
José

[Sephir0th]

Re: Acer Nitro 5 LA-H501P GTX 1650 - GPU not working

0.29V at GPU Core sounds to low. What resistance to GND do you have there? Measure with a exact multimeter, without power and substract the internal resistance of your probes.
Could be a rare case where it is worth to do the shot into the blue by replacing the DrMOS and/or the Controller.

[magneh]

Re: Acer Nitro 5 LA-H501P GTX 1650 - GPU not working

0.29V at GPU Core sounds to low. What resistance to GND do you have there? Measure with a exact multimeter, without power and substract the internal resistance of your probes.
Could be a rare case where it is worth to do the shot into the blue by replacing the DrMOS and/or the Controller.

Hallo Sephir0th!

Yes, o I have 0.6ohm if I substract the multimeter resistance of the probes.

yes I tried to get datasheet of the QD9619A but doesnt seem to be available.
Measured and compared few pins between them to see if I could find something but values are the same (they could still be bad as I dont have datasheet)

I lifted both GPU coils and I have on GPU side the same 0.6ohm and on the DRmos side 56kohm+

Still a good candidate for a shot?
Danke!

Im also tempted to do that.

[Sephir0th]

Re: Acer Nitro 5 LA-H501P GTX 1650 - GPU not working

Yeah, almost nothing to lose i'd say