MacBook Pro A1990 Battery not recognized repair

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MacBook Pro A1990 Battery not recognized repair
Device MacBook Pro A1990
Affects part(s) Motherboard, battery
Needs equipment multimeter, soldering iron, soldering station
Difficulty ◉◉◉◌ Hard
Type Soldering, Micro-Soldering"Micro-Soldering" is not in the list (Soldering, Teardown, Part replacement, Cleaning, Software, BGA, General) of allowed values for the "Repair Guide type" property., Part replacement


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Problem description

MacBook A1990 not recognizing the connected battery

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Symptoms

  • MacBook not turning on.
  • Battery not recognized/charging

Solution

  • First, try a known good battery.
    • If it doesn't work, check the battery cable going to the board.
      • Sometimes there is corrosion here, sometimes the customer tore the bar on the connector off the connector.
  • In some rare cases the SMC still is a factor in battery recognition on this board.
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