Hello, I have a macbook a1706 (820-00923-A) that does not turn on, the 20v ubc triggers but no power consumption, no short and no liquid damage, PPBUS_G3H: 0V15 (16mohms no short), U7000 is well powered by the 20V, I looked at everything around the ISL9239 chip the resistors are good, so I replaced the chip twice but the result is the same, my skills stop there can you help me please?
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What are the voltages to ground of the following points?
TBA_VDDA
TBA_VDDP
TBA_AUX_DET
TBA_CSI_P
TBA_CSI_N
SMBUS_SMC_5_G3_SDA
SMBUS_SMC_5_G3_SCL
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TBA_VDDA : 5V12Originally posted by mon2 View Post
TBA_VDDP : 5V12
TBA_AUX_DET : 4V94
TBA_CSI_P : 19V77
TBA_CSI_N : 19V77
SMBUS_SMC_5_G3_SDA : 3V27
SMBUS_SMC_5_G3_SCL: 3V27Comment
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These look ok to me. Flux and remove the fuse @ F7000. Power up again with the adapter. What voltage do you measure at the removed fuse F7000, pcb pad #1 = ISL / producer side of this power rail.Comment
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