Reset the SMC with the Top Housing Removed

You can also reset the SMC by directly pressing the SMC reset switch located on the logic board. Follow these steps to access the SMC reset switch on the logic board.

  1. Unplug all cables from the computer.
  2. Remove the top housing.
  3. If necessary, remove the internal frame to access the battery.
  4. Measure the voltage of the battery in the battery holder. The battery should measure 2.6V to 3.0V. If the battery does not have minimum voltage, replace the battery. After replacing the battery, wait 10 seconds and then reset the SMC (refer to the next step). If the battery voltage is good, go on to the next step.
  5. Press the SMC button (circled below) on the side of the logic board, near the heatsink and LED connector. Be sure to press it just once. Because of the restricted space, you may need to use a black stick to press this switch.

Warning: Do not press the SMC reset switch a second time because it could adversely affect the SMC chip.

Mac Mini Smc Button

6. This procedure also resets the computer's PRAM. Be sure to reset your computer's time, date, and other system parameter settings as necessary.

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DIY Battery Repair

DIY Battery Repair

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