Apple M4753 manual Verify EMI shield has no contact with outer shield

	Troubleshooting			Symptom Charts/Power - 9
	won’t charge	1	Reset power manager (shift-Fn-Ctrl-Pwr button).
Battery
		2	Try battery in opposite expansion bay.
		3	Verify EMI shield has no contact with outer shield of the
			power adapter (refer to Additional Procedures, “Right I/O
			Wall EMI Shield”).
		Caution:		When reinstalling the top case, ensure the EMI shield
		will not make contact with the outer shield of the AC power
		adapter. Otherwise when the power adapter is plugged in, the unit
		will not charge the battery during use.

4Try known-good battery. Repeat once.

5Replace charge card.

6Replace PMU board.

7Replace power supply card.

8Replace I/O logic board.