Hello everyone. Laptop a little flooded in KBC area. KBC soldered new (programmed).
+3VALWP, +5ALWP, +VL, +3VLP, +3VAWLP_PCH, +5VALWP_PCH - present. S5 enabled, PCH is giving PM_SLP_S5#.
Power consumption 0,01A. After switch power button, nothing is happening. ON/OFF correctly getting to 0V when pressed.
My worries - PCH_RSMRST# - 0V, so PBTN_OUT# doesn't react and there is 3,3V always. BIOS reprogrammed. There is no communication between PCH <-> BIOS. No oscillograms.
Appreciate your help. Thanks.

A lot of new 9012 KBC's are not working. A you sure that your one is original?

Kbc bought from checked seller. Suggesting changing KBC or PCH?

Seems need to replace PCH.

I had to rebuild some traces (power supply 3,3V for KBC). Then was problem with SYS_PWROK signal. It was shorted to GND. Changing the U1 solved the problem.
Thanks for advices.