820-3115, pp3v3_s4 stuck on 0.4V

yobad

Member
Smc_reset_l 3.3v
ppbus_g3h 12.59v
Battery SDA/SCL 3.4v, diode .544 on both lines

pp5v_sus 0v
Pp3v3_s4 0.4v, line resistance 30kohm, diode mode .400
 

2informaticos

Administrator
Staff member
You have missing xV_SUS rail, why do you check xV_S4 one?
Check S5 voltages and PM_SUS_EN.
Probably missing SMC_BATLOW_L, be sure to have correct charger.
 
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