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If I understood correctly, I set the multimeter to diode mode, and first I connect the black probe to ground and measure the CC line with the red probe. Then, I switch the red probe to ground and measure the CC line with the black probe. The readings are approximately the same everywhere...

I noticed an interesting detail. If I connect the power cable to the top port, the total voltage is around one and a half volts. But if I connect it to the bottom port, the voltage is normal. Top port. PPBUS_G3H – 1.5 V Bottom port. PPBUS_G3H – 12.3 V This could be related to the issue of the...

Do I understand correctly that I just need to connect power to the board and take measurements on all the coils?

And also, I don't know why, but if I connect the power connector through the device I bought on AliExpress, which shows voltage and current consumption in amperes, it shows 5 volts. However, if I connect the cable directly to the board without this adapter and measure with a multimeter, 20 volts...

**What has been done:** The board has been inspected. No signs of liquid damage were found. Under the microscope, no elements were observed that show signs of corrosion. There are no visible burn marks on the chips. If the board is removed from the laptop and power is applied to it, the...

I have already completely removed the board from the laptop. It is lying separately in the drawer. In this case, is it possible to check whether it powers on or not, or do I need to put it back into the laptop and only then check if there is a response to the power button?

MacBook Pro 13” 2020 A2251 No response to the power button. PPBUS_G3H – 12.3 V PP20V_USBC_X_VBUS – 20.3 V Could you please advise what should be checked before pressing the power button? And what additional measurements need to be taken? 1. PPBUS_G3H — 2. PP3V3_G3H — 3...