After a closer inspection I found a short on PU101, pin #23 (connect to the gate of PQ105) and pin #22 (GND). I didn't notice it before!
Removed the short, now it charges the battery!
Now I'll test the laptop using some stress tests and then I'll give it back to the owner.
Thank you anyway. I'll keep in my bookmarks the link about how to check the charging circuit because I think it could be useful in the future.

PQ101 and PQ102 not shorted, if they were shorted, the laptop won't power on now.
It powers on and boot to windows correctly, but battery doesn't charge....

it's NM-D191 GY535/GY536, Rev 1.0




I'll check for short on them and i'll tell write what i'll find.




i'll check also this, thank you!...

Hello everybody,
One of my friends brought me his brother's laptop to repair, I'm the third person who put the hands on this laptop (he tried to convince his brother to take it to me for the ram upgrade, dust cleanup and thermal paste replacement but he wanted to make it to his university friend... sorry if I say that, but we saw the result).
The laptop is a Lenovo IdeaPad Gaming 3 15ARH05 with AMD Ryzen CPU and Nvidia GPU.

I'm going to give a quick recap of what happened before I got this laptop for repair to make clear the situation.

A friend of his brother...

Re: Graphics card Schematics and Boardviews



hello, i'm still looking for this schematic. does anyone have it?...

Re: Graphics card Schematics and Boardviews

Hello, I have an old but never used Gigabyte GTX 650 OC 2GB GV-N650OC-2GI (GPU GK107-450-A2).

Damaged at the very first start up and never fixed repaired when it was under warranty by old owner (he thought this graphic card could run without 6-pin connected).

The motherboard doesn't recognize it as far as I remember, fan doesn't spin at boot.

Someone has schematics and/or boardview for this card?
I can't find them

Re: New Members - please post your introductions here

Hello everyone.

I've found this forum while searching for some schematics to try to do some repairs on PC components!

I already work in repair department and I do basic electronics repairs to electronic battery charger and maintainer, but my deep passion are PCs (build and repair).
Before I've worked for a company that sells ledwalls and I've done successfully led repairs before, and obviously also ledwalls installation.

I hope I can expand my knowledge here