More actions
| A2992 Stuck on 5V and 0.02A Current Draw | |
|---|---|
| Device | MacBook Pro A2992 |
| Affects part(s) | |
| Needs equipment | |
| Difficulty | |
| Type | Soldering, Teardown, Cleaning |
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Problem description
Symptoms
- USB Ammeter stuck at 5V
- PPBUS_AON Present
- No Magsafe Charging Light
- No Power
Solution
Liquid damage around C7762 pulling down PP1V8_AWAKE_SEPROM_LDO.
Diagnostic Steps
Check USB C Ammeter stuck at 5V and low current draw
Check if PPBUS_AON and PP3V8_AON are present
Proceed to visual inspection of area around C7762 for corrosion
Repair Steps
Clean area around C7762 of corrosion
Remove or replace any shorted caps around C7762
Test and repair any corroded traces.