Hi, i just received this P1 gen 3 and started troubleshooting it, and im encountering a very bizzarre behaviour which i cannot find any info or example about:

The laptop doesnt turn on, you do get amber light on the charger led and both the power button and lid led blinks 3 times like described on the manual when the machine is plugged into power. but nothing else. Same behaviour when trying charging when either of the two usb-c ports or the proprietary DCIN connector.

I proceeded removing cmos battery and main battery to try and see if it would change anything, but nothing....

I'm Carlo, i'm an electronics engineering student from Italy who's passionate about laptop repair. Nice to meet you!