| MacBook Pro A1990 Not turning on, drawing 0.11A at 20V repair | |
|---|---|
| Device | MacBook Pro A1990 |
| Affects part(s) | Motherboard |
| Needs equipment | multimeter, soldering iron, soldering station, thermal camera |
| Difficulty | ◉◉◉◌ Hard |
| Type | Soldering |
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Problem description
A1990 MacBook not turning on and only drawing 0.11A at 20V
Symptoms
- MacBook not turning on
- current draw of 0.11A at 20V as shown by USB-C meter
Solution
PP2V5_NAND_SSD0 can be shorted (in this case, PPBUS_G3H luckily didn't go to SSD)
I replaced SSD buck converter but the short was still there, found a shorted cap on the other side of the board C9088 which relieved the short on PP2V5_NAND_SSD0