Clevo W25CEW power cycling

[Conste]

Dear forum,

I have a Clevo W25CEW Notebook which died. It worked perfectly, but then it stopped working.
As I see it tries to power on (drives RAM power supply etc.), but then turns off after less then one second.
Bios and EC were flashed, same issue.

I also see power consumption at 19V switching between 0,1 A and 0 A.

19v rail is fine. I also see 3v3 and 5v (VDD5 is there/ 5v & 5VS is there for a short time and then goes to 0V, exactly same for 3v3, see page 34)

On bios chip I see between 0 and 3v3, with the power cycling.

All inductors show normal values in my opinion.

Resistance @ HM77 is around 55 ohms - normal I guess?

Service manual is here - where to start?


https://www.manualslib.com/manual/11...vo-W25cev.html


Thanks in advance.

Edit: From power sequence I see that RSMRST is present, but then problems occur, USB_CHARGE_EN is also cycling

[Conste]

Re: Clevo W25CEW power cycling

Anyone?

I have measured resistance of PLT_RST to ground and it is 15-17 Ohms, is that too low?