820-01598 no power

Kyle93

Active member
Arrived with minor liquid damage and stuck at 5v. CD3217 LDOs are good.

PPBUS_G3H 12.30V PP3V3_G3H 3.3V

LPS2R and AWAKE voltages are all 0v not shorted.

L7806-L7809 around U7800 are all OL diode mode

LDO_RTC 0v

Does this sound like bad U7800??? Should anything else be checked?
 

Kyle93

Active member
Looks like a bad U6903. CHGR_EN_MVR was 0v and shorted. Replaced U7000

CHGR_EN_MVR now present 5v PPVIN_G3H present 12.30V PP3V3_G3H still 0v

Replaced U6903 from donar but no change. Also changed C6903.

Ordered some replacement TPS chipsets will update once replaced again.
 
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