Hi,
I have a macbook air 2018 A1932 820-01521-A, with water damage on 7650, I changed U7650 U3100 AND U3200,
no start, T2 warms up slightly, but no shorts, I noticed PP3V3_G3H is low and does not release the PP1V8_G3S which feeds the bt rom
do you have any advice to help me? thank you
LOW TENSION :
PP3V3_G3H 3V22 > P1V8G3S_EN 0V > P1V8G3S_SS > 0V > PP1V8_G3S 0V
PPBUS_G3H 12V26
other voltage:
PPDCIN_G3H 5V
PP5V_G3S 5V
PPBUS_G3H 12V26
PP3V3_G3S 0V
PP1V8_G3S 0V
PP3V3_G3H_RTC 3V27
pp1V8_SLPS2R 1V79
PPVBAT_G3H_FUSE 0V20
CHGR_VBAT 0V20
PPBUS_HS_CPU 12V28
PPVIN_G3H_P5VG3S 12V28
PP5V_S5_LDO 0V
CHGR_BGATE 12V28
U3100:
PP1V1_UPC_XA_LDO_BMC C3104 0V
PP1V8_UPC_XA_LDOD C3105 1V79
PP1V8_UPC_XA_LDOA C3106 1V80
PP3V3_UPC_XA_LDO C3108 3V3
PP3V3_TBT_X_SX R2864 3V26
PP20V_USBC_XA_VBUS F3000 5V
U3200:
PP1V1_UPC_XB_LDO_BMC C3204 0V
PP1V8_UPC_XB_LDOD C3205 1V79
PP1V8_UPC_XB_LDOA C3206 1V79
PP3V3_UPC_XB_LDO C3208 3V3
PP3V3_TBT_X_SX R2864 0V 3V26
PP20V_USBC_XB_VBUS F3010 5V
I have a macbook air 2018 A1932 820-01521-A, with water damage on 7650, I changed U7650 U3100 AND U3200,
no start, T2 warms up slightly, but no shorts, I noticed PP3V3_G3H is low and does not release the PP1V8_G3S which feeds the bt rom
do you have any advice to help me? thank you
LOW TENSION :
PP3V3_G3H 3V22 > P1V8G3S_EN 0V > P1V8G3S_SS > 0V > PP1V8_G3S 0V
PPBUS_G3H 12V26
other voltage:
PPDCIN_G3H 5V
PP5V_G3S 5V
PPBUS_G3H 12V26
PP3V3_G3S 0V
PP1V8_G3S 0V
PP3V3_G3H_RTC 3V27
pp1V8_SLPS2R 1V79
PPVBAT_G3H_FUSE 0V20
CHGR_VBAT 0V20
PPBUS_HS_CPU 12V28
PPVIN_G3H_P5VG3S 12V28
PP5V_S5_LDO 0V
CHGR_BGATE 12V28
U3100:
PP1V1_UPC_XA_LDO_BMC C3104 0V
PP1V8_UPC_XA_LDOD C3105 1V79
PP1V8_UPC_XA_LDOA C3106 1V80
PP3V3_UPC_XA_LDO C3108 3V3
PP3V3_TBT_X_SX R2864 3V26
PP20V_USBC_XA_VBUS F3000 5V
U3200:
PP1V1_UPC_XB_LDO_BMC C3204 0V
PP1V8_UPC_XB_LDOD C3205 1V79
PP1V8_UPC_XB_LDOA C3206 1V79
PP3V3_UPC_XB_LDO C3208 3V3
PP3V3_TBT_X_SX R2864 0V 3V26
PP20V_USBC_XB_VBUS F3010 5V
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