| MacBook Pro A1502 Not turning on (24–25 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
#incomplete
Symptoms
- Not turning on.
- Pulling only 24–25 mA from the charge port.
Solution
- PM_SLP_S4_L missing for random reason, thoroughly inspect clock chip, tiny specks of corrosion next to it can kill it. Sometimes shotgun replacement of the chip is a clean solution.
- CHGR_DCIN_D_R shorted to ground.
- Bad right I/O board. Unplug it, see if it works (short on 3.3 V or 5 V rail on the I/O board can cause this problem).