ytesfay80
Member
This board had quite a bit of liquid damage. Initially it had no light on the charger and no ppbus_g3h. I have put flux and heated all the areas with liquid damage.
PPBUS_S5_HS_COMPUTING_ISNS was shorted to ground and the caps on that line were burned on the end so I replaced all of them. The short is gone on there and it now shows 12.58v on it.
PPBUS_G3H - 12.58v
PPVRTC_G3H - 3.45v
PP5v_S5 and PP3v3_S5 both show 0v and there is no short to ground on them.
I have replaced many components that looked bad and they were connected to the 3v3 and 5v rails.
Here are a list of some components I replaced:
Q7820 and the caps/resistors next to it
U2660, C2600, C2660
C7943 and R1923
R3380
U7200(TPS51125) looks spotless with no liquid damage.
I haven't UC'd the board yet so I can save a cleaning.
PPBUS_S5_HS_COMPUTING_ISNS was shorted to ground and the caps on that line were burned on the end so I replaced all of them. The short is gone on there and it now shows 12.58v on it.
PPBUS_G3H - 12.58v
PPVRTC_G3H - 3.45v
PP5v_S5 and PP3v3_S5 both show 0v and there is no short to ground on them.
I have replaced many components that looked bad and they were connected to the 3v3 and 5v rails.
Here are a list of some components I replaced:
Q7820 and the caps/resistors next to it
U2660, C2600, C2660
C7943 and R1923
R3380
U7200(TPS51125) looks spotless with no liquid damage.
I haven't UC'd the board yet so I can save a cleaning.