820-3332 missing SMC_BATLOW_L

Repairable

Active member
Came in from the shit pile no know history.
seen some liquid on the u7000 area (cleaned it)


PPBUS_G3H 12.58v
PPVIN_S5_HS_COMPUTING_ISNS 12.57v
PPVIN_S5_HS_GPU_ISNS 12.58v
PPVIN_S5_HS_OTHER_ISNS 12.58v
PPDCIN_G3H 18.36v
PPDCIN_G3H_ISOL 18.9v
PP3V42_G3H 3.428v
PPVRTC_G3H 3.321v
PP5V_S5 5v
PP5V_SUS 0.0005v

P5VSUS_EN 4.9v
SMC_BATLOW_L 0.0003v R5040 98.2KOHM
R5040 pin 1 3.320v pin 2 0.003v (0.697 DIODE AND 98,2KOHM)
PM_BATLOW_L (0.501 diode and 4.51 Mohm)

PM_SLP_SUS_L 3.321v

SMC_RESET_L 3.392V
SMC_LID 3.428V


BTW REAL CHARGER 85W
green light turns to orange after a while
 
Last edited:

2informaticos

Administrator
Staff member
Battery is charging?
PM_BATLOW_L goes high when connect battery?
I only saw this issue with incorrect charger...
Bad SMC can cause it too.

In this case, check first R5040, Q5040 area; if charger is OK.
 

dukefawks

Administrator
PP5V_SUS 0.0005v
P5VSUS_EN 4.9v


That seems like a pretty obvious problem.....How can enable be 4.9V when it all runs from a 3.3V source?
 
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