820-03285 no keyboard no trackpad

[bartech]

nothing get hot on board ppvbus_usbc 1 or 2 0v

 

[2informaticos]

Check diode mode on PPBUS_AON.
Test the board alone on the desk.

 

[bartech]

ppbus_aon - 508

 

[2informaticos]

Post U5200 basic voltages: P_IN, AUX_DET, SMC_RST_IN, VDDA/P, EN_MVR, AUX_OK, A/BMON.

 

[bartech]

U5200
ppdcin_aon-0v
chgr_aux_det-0v
smc_rst_in-0v
VDDA/P-0
EN_MVR-0
A/BMON-0

 

[2informaticos]

Aaaaa, even PPBUS_AON is missing.

USB-C tester stays black?
Not even 5V on any port?

 

[bartech]

nothing on any usb c
something going on at ppdcin_usbc aon but its like 0.8v and going slowly down

 

[2informaticos]

Test the board alone on the desk; just USB-C ports connected.
Check diode mode to ground on CC1/2 lines.