MacBook Pro A1990 Not turning on, drawing 0.11A at 20V repair

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Revision as of 16:29, 11 October 2023 by ASRepairs (talk | contribs) (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== A1990 MacBook not turning on and only drawing 0.11A at 20V thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it! ==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 S...")
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MacBook Pro A1990 Not turning on, drawing 0.11A at 20V repair
Device
Affects part(s)
Needs equipment
Difficulty
Type


Problem description

A1990 MacBook not turning on and only drawing 0.11A at 20V

Example image (Figure 1) -- No image yet. Help expand this page by uploading it!

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

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