Was hoping for a little more help and/or some advice. The motherboard is an 820-4924-a (schematic and board view included) I had a few shorts and repaired them. When checking voltages they're off, PP18v5_dcin_conn_r is at 16.3V. Also on PPVIN_G3H_P3V42G3H is getting the same 16.3volts, ppbus_g3h_r is at 12.9v. I replaced U7090, c7090, c7091and c7092 (one of the caps was shorted to ground) the short was causing r7020 to smoke, replaced it and fixed the short now voltages are off...
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Re: Macbook 2015 motherboard help!
What is the issue?OpenBoardView — https://github.com/OpenBoardView/OpenBoardView -
Re: Macbook 2015 motherboard help!
The issue is, will not power on and the magsafe charger light is very dim.Comment
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Re: Macbook 2015 motherboard help!
SMC not communicating with Magsafe then.
Try another Magsafe2 60W/85W and another DC-in board, and check voltage on PP3V42_G3H, SMC_RESET_L.
Measure exact voltage on PPBUS_G3H (12.xxV).OpenBoardView — https://github.com/OpenBoardView/OpenBoardViewComment
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Re: Macbook 2015 motherboard help!
Tried both a 60w and an 80w MagSafe no change. Voltages for the following are; pp3v42 = 3.42v , voltage for SMC_RESET_L = 3.38V and the voltage for PPBUS_G3H = 12.29v will try another dc in board as well...... Tried another DC in board , same result, solid low light stays on....Comment
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Re: Macbook 2015 motherboard help!
SMC is not turning on. If there is any liquid damage near the SMC, you can try to reflow it.OpenBoardView — https://github.com/OpenBoardView/OpenBoardViewComment
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Re: Macbook 2015 motherboard help!
Thanks for the help. I tried a reflow, I believe the chip may be bad will get one from a donor board and pray I can swap it.Comment
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