I'm going to update myself.
I think I am mixing up "faults" here. What I quoted above is a fault where the mosfet refuses to turn on - for example the mosfet is shorted and when 6V are provided, they also appear on the Source so Vg-Vs = 0 and the charge IC says "stop".


but I kept reading the document and I found this


So the IC is sensing the short (via current sensing resistors) and it's applying the very same "7 tries" behaviour.

Do I see this correctly?...

I started looking into this laptop and tried o familiarise myself with the power circuit.

I think I found the issue but I'd like to understand what I am seeing - also because I'd like to make a repair video!

I think I have a short and when the charger IC tries to turn on the first mosfet, it detects the short and stops immediately. I only tried with a meter but I can see some pulses on the gate of PQ89001 for 7 times, then it stops.

Looking at the manual for the charger IC, I see a mention of the 7 tries but I am not sure I understand what's happening....