No water damage to this board, no repair attempt, "It Used to work good until it didn't anymore
"
Current sensing r7051 was 70ohms: replaced. I can see orange light when the battery is plugged.
PPBUS_G3H 12.60V
PP3V42_G3H 3.44V with green light
L7220 3.3V (PP3V3_S5)
L7260 0V (PP5V_S3)
No S3 power state no PM_SLP_S4_L
Checked RTC clock circuit and have PPVRTC_G3H, PP3V3_S5 and 32kHz clock
PM_PWRBTN_L high 3.44V
PM_SYSRST_L low 0.082v
PM_RSMRST_L high 3.28v
SMC_RESET_L high 3.42v
PM_BATLOW_L high 3.29v
PCH_SUSWARN_L LOW 1.1v
I would love to blame the SMC for not outputing PM_SYSRST_L but it seems to be alive.
U6100 pin 7 SPIROM_USE_MLB is only 0.52V maybe this doesn't mean anything since something upstream is missing.
Any suggestion?
Thanks
Current sensing r7051 was 70ohms: replaced. I can see orange light when the battery is plugged.
PPBUS_G3H 12.60V
PP3V42_G3H 3.44V with green light
L7220 3.3V (PP3V3_S5)
L7260 0V (PP5V_S3)
No S3 power state no PM_SLP_S4_L
Checked RTC clock circuit and have PPVRTC_G3H, PP3V3_S5 and 32kHz clock
PM_PWRBTN_L high 3.44V
PM_SYSRST_L low 0.082v
PM_RSMRST_L high 3.28v
SMC_RESET_L high 3.42v
PM_BATLOW_L high 3.29v
PCH_SUSWARN_L LOW 1.1v
I would love to blame the SMC for not outputing PM_SYSRST_L but it seems to be alive.
U6100 pin 7 SPIROM_USE_MLB is only 0.52V maybe this doesn't mean anything since something upstream is missing.
Any suggestion?
Thanks