I need help with this M1 Air, please.
According to the customer, it was liquid damaged a year ago and has been off since.
The main corrosion was on the U5200 and around.
I've replaced R5230, U5200, U5215 and U5216.
Was stuck on 5v 0.04A and after replacing all components it changed to 5V 0.190A ~ 0.398A.
Can't find any short and diode measurements on all coils match with a good LB.
U8100 glowing every sec right at the B13 point.
U7700 glowing every sec right at J14 point.
Injecting 1V on PP3V8AON_PH3make than glows.
PP3V8AON_PH3 - 3.78V stable
PPBUS_AON - 11.3V ~ 12.5V
PP3V3_UPC1_LDO - 3.4V
PPDCIN_AON_CHGR_R - 5.11V
CHGR_GATE_Q1 - 10.21V
CHGR_GATE_Q2 - 0V
P_IN : 5.16V
AUX_DET: 1.2V
SMC_RST_IN: 0V
VDDA: 5V
VDDP: 5V
EN_MVR: 5V
AUX_OK = 1.3V
A/BMON = 0V , 0V
Thanks
According to the customer, it was liquid damaged a year ago and has been off since.
The main corrosion was on the U5200 and around.
I've replaced R5230, U5200, U5215 and U5216.
Was stuck on 5v 0.04A and after replacing all components it changed to 5V 0.190A ~ 0.398A.
Can't find any short and diode measurements on all coils match with a good LB.
U8100 glowing every sec right at the B13 point.
U7700 glowing every sec right at J14 point.
Injecting 1V on PP3V8AON_PH3make than glows.
PP3V8AON_PH3 - 3.78V stable
PPBUS_AON - 11.3V ~ 12.5V
PP3V3_UPC1_LDO - 3.4V
PPDCIN_AON_CHGR_R - 5.11V
CHGR_GATE_Q1 - 10.21V
CHGR_GATE_Q2 - 0V
P_IN : 5.16V
AUX_DET: 1.2V
SMC_RST_IN: 0V
VDDA: 5V
VDDP: 5V
EN_MVR: 5V
AUX_OK = 1.3V
A/BMON = 0V , 0V
Thanks
