george-a
Member
Hi guys,
This 820-2915 came in with green light and most voltages present, I say most cause since its not powering on something surely is missing.
It seems it was LD through the USB ports side - no extreme corrosion present - I UC it before anything else.
PPBUS_G3H at 12,5V
PP3V42_G3H at3,41V
P3V3_S5 also normal
Battery pulses are present - I assume this means the SMC is working and tries to talk to the battery
and there is a green light...
on the other hand
SMC_RESET_L is constantly high
also PPVBAT_G3H_CONN starts at 12,5V and drops to 5V so does CHGR_BGATE, then it repeats as long as the PSU is connected.
I replaced U7000 already and measured the two current sense points with normal values.
EDIT1: I measured around and found PP3V3_S4 to appear at some point but at 0.5 to 1.5V and fluctuating. The PP3V3_S4 FET and its surrounding components are missing - still looking to see where this comes from.
EDIT2: PM_SLP_S4_L not present at R7913/pin2.
Why all the funny ones come to me? I mean I really need one or two with just a blown BKL fuse to maintain mental health...
thanks in advance guys.
This 820-2915 came in with green light and most voltages present, I say most cause since its not powering on something surely is missing.
It seems it was LD through the USB ports side - no extreme corrosion present - I UC it before anything else.
PPBUS_G3H at 12,5V
PP3V42_G3H at3,41V
P3V3_S5 also normal
Battery pulses are present - I assume this means the SMC is working and tries to talk to the battery
and there is a green light...
on the other hand
SMC_RESET_L is constantly high
also PPVBAT_G3H_CONN starts at 12,5V and drops to 5V so does CHGR_BGATE, then it repeats as long as the PSU is connected.
I replaced U7000 already and measured the two current sense points with normal values.
EDIT1: I measured around and found PP3V3_S4 to appear at some point but at 0.5 to 1.5V and fluctuating. The PP3V3_S4 FET and its surrounding components are missing - still looking to see where this comes from.
EDIT2: PM_SLP_S4_L not present at R7913/pin2.
Why all the funny ones come to me? I mean I really need one or two with just a blown BKL fuse to maintain mental health...
thanks in advance guys.
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