#1 HP-15t-bs000 (MOBO. LA-E801P REV. 2.0) Not Working - No Lights
przez RafiManch • 15 lutego 2022, 20:41
Hello Everyone,
I have HP laptop with MOBO LA-E801P REV. 2.0 and is not working (no lights - nothing).
Without schematics is hard to investigate this one. Could not find one anywhere.
I hope that someone more experienced can help me to find what is the the problem here.
5V/3.3V are not present. Resistance on all coils is not indicating any short circuits. 19V goes to first Mosfet but there is no voltage coming out . I have removed and measured Mosfet and no problem with this one. After soldering back to motherboard resistance measure was correct on drain site (input - 237KΩ) but I am getting only 7Ω on source site (output). I have used thermal camera and I can see PQA1 flashing. Getting and loosing power ?
Any advice will be very appreciated.
Thank you.
Regards,
Rafal S.
I have HP laptop with MOBO LA-E801P REV. 2.0 and is not working (no lights - nothing).
Without schematics is hard to investigate this one. Could not find one anywhere.
I hope that someone more experienced can help me to find what is the the problem here.
5V/3.3V are not present. Resistance on all coils is not indicating any short circuits. 19V goes to first Mosfet but there is no voltage coming out . I have removed and measured Mosfet and no problem with this one. After soldering back to motherboard resistance measure was correct on drain site (input - 237KΩ) but I am getting only 7Ω on source site (output). I have used thermal camera and I can see PQA1 flashing. Getting and loosing power ?
Any advice will be very appreciated.
Thank you.
Regards,
Rafal S.