| MacBook Pro A1502 2015-2016 Not turning on (90 mA current draw) repair | |
|---|---|
| Device | MacBook Pro A1502 |
| Affects part(s) | Whole board |
| Needs equipment | multimeter, soldering iron, soldering station |
| Difficulty | ◉◉◉◌ Hard |
| Type | Soldering |
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Problem description
No power, no green light, 90mA taken, PPBUS_G3H stuck at 12.27 V
Symptoms
- Not turning on
- Only pulling 90 mA from charge port
- No green charge led
- PPBUS_G3H stuck at 12.27 V
Solution
Corrosion around SMC chip and surrounding components, short on PP3V42_G3H, bad clock chip).
Example video: (Reflow of SMC, replaced surrounding components, jumper wire, used voltage injection to determine short, replacement of clock chip).