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820-00923-A - How to locate a short by injecting voltage into the circuit
Hi to everyone, I am facing a short circuit issue on a circuit board and would like to share my situation to seek advice and suggestions from the community. I have identified the short circuit on the PPVBAT_G3H_CHGR_REG line, and I have proceeded to isolate the circuit by removing R7060 and...- imperialboard89
- Thread
- Replies: 7
- Forum: Macbook Logic Board Repair Questions
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820-00923-A Not Powering Up After BIOS Flash
Hello everyone, I have a 820-00923-A board that used to boot without any issues before I flashed the BIOS. After programming the BIOS chip with the CH341A programmer, the board did not power up anymore. So, I took the schematics of the board and started checking the power aliases. I verified...- imperialboard89
- Thread
- Replies: 28
- Forum: Macbook Logic Board Repair Questions