MacBook Pro A1502 2015-2016 Not turning on (Orange LED and 180 mA current draw) repair: Difference between revisions
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(Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== 180 mA from the charger, the charger light stays orange and machine does not turn on thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==Symptoms== *Not turning on. *Only 180 mA current draw from the charge port. ==Solution== Corrosion at U5400 current sensing (R5400) circuit PP3V3_SO_HS_CO...") |
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{{Repair Guide | {{Repair Guide | ||
|Device= | |Device=MacBook Pro A1502 | ||
|Affects parts= | |Affects parts=Whole board | ||
|Needs equipment= | |Needs equipment=multimeter, soldering iron, soldering station | ||
|Type= | |Type=Soldering | ||
|Difficulty= | |Difficulty=3. Hard | ||
}} | }} | ||
{{stub}} | |||
==Problem description== | ==Problem description== | ||
180 mA from the charger, the charger light stays orange and machine does not turn on | 180 mA from the charger, the charger light stays orange and machine does not turn on |
Latest revision as of 13:12, 8 November 2023
MacBook Pro A1502 2015-2016 Not turning on (Orange LED and 180 mA current draw) repair | |
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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
180 mA from the charger, the charger light stays orange and machine does not turn on
Symptoms
- Not turning on.
- Only 180 mA current draw from the charge port.
Solution
Corrosion at U5400 current sensing (R5400) circuit PP3V3_SO_HS_COMPUTING. This device makes power for the stages of CPU_VCORE. U5400 signals the SMC.
- Corrosion for U5400 was removed.
- Jumper wires were added to replace the faulty traces at U5400.
- U5400 and current sense resister restored.
- U7400 (Voltage regulator) chip was replaced and surrounding circuitry restored.
- Backlight circuitry and other areas cleaned up (corrosion).