Jeffotskie26
Member
hello got this with 0V on ppbus g3h not shorted. 5v 1.87amp on all ports
mess here, previously all chips got correct ldo voltage including 1v1 ldo on cd3215
so i checked parts on u7000/u6903/d6902/ theres no short circuit on this part.
followed from my previous post https://boards.rossmanngroup.com/threads/solved-820-00923-no-power-no-1v1-ldo.61493/
replaced u7000/d6902/u6903 just trying my luck here. this part also did from other shops.
still no luck . after this suddenly u3200/4200 this side my usbC meter is looping 1v1ldo still present also looping.
which is UB300/400 not looping (stable 5.19v 1.36amp) this time ub400 missing 1v1ldo after i replaced twice ub400 1v1ldo still not present
then wonder whats wrong. so i test ldo1v1 on ub300also missing so i replaced ub300 now both ub300/400 have 1v1ldo but also now looping/restarting same as
u3200/4200.
i didnt see any short/leaks on all related component,
voltages:
PP3V3_G3H ok
u6903
pin1 7.8v
pin2 4.8v
pin3 3.4v
pin8 4.8v
pin9 1.0v
pin10 5v
mess here, previously all chips got correct ldo voltage including 1v1 ldo on cd3215
so i checked parts on u7000/u6903/d6902/ theres no short circuit on this part.
followed from my previous post https://boards.rossmanngroup.com/threads/solved-820-00923-no-power-no-1v1-ldo.61493/
replaced u7000/d6902/u6903 just trying my luck here. this part also did from other shops.
still no luck . after this suddenly u3200/4200 this side my usbC meter is looping 1v1ldo still present also looping.
which is UB300/400 not looping (stable 5.19v 1.36amp) this time ub400 missing 1v1ldo after i replaced twice ub400 1v1ldo still not present
then wonder whats wrong. so i test ldo1v1 on ub300also missing so i replaced ub300 now both ub300/400 have 1v1ldo but also now looping/restarting same as
u3200/4200.
i didnt see any short/leaks on all related component,
voltages:
PP3V3_G3H ok
u6903
pin1 7.8v
pin2 4.8v
pin3 3.4v
pin8 4.8v
pin9 1.0v
pin10 5v
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