820-00840 no power

[Kyle93]

This was working fine and just randomly died. No liquid damage. 20v at 0 amp draw

PPBUS_G3H 13.1

PP3V3_G3H 3.3V

PP5V_S5 5V

pp3v3_s4 0v


what should be checked next?

 

[2informaticos]

Do you get PM_SLP_SUS_L and 3V3_S5G?

 

[Kyle93]

No, they are both 0v

 

[2informaticos]

Check PM_BATLOW_L, PM_DSW_PWRGD and PCH's RTC signals.

 

[Kyle93]

PM_BATLOW_L 3.3V

PM_DSW_PWRGD 3.4V

PCH_INTRUDER_L - 2.8V

PCH_SRTCRST_L 3V

RTC_RESET_L - 3V

 

[2informaticos]

Looks like bad PCH...

 

[Kyle93]

Can the SSD kill the PCH or could it be a coincidence? The customer wanted to upgrade to a 1TB SSD. The machine was working fine prior to the replacement SSD

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[2informaticos]

It can, if he didn't disconnect the battery.
PPBUS_G3H is directly present on the SSD connector.