Troubleshooting

No power (no sound, no screen, LED on Nintendo board not on)

1. Verify the voltage at the Nintendo PCB battery terminals.  This is nominally around 3 volts but may be slightly more or less.  If it's zero volts, check the battery, the type C board, wiring and/or soldering, or diode direction (if GBA).

2. If you have voltage going into the Nintendo board, the most likely causes of no power are the power switch or a blown fuse.  These fuses are very small and can be checked with a multimeter for continuity (resistance should be zero).

 

For GBA-SP

Try stock charging

Verify wires are correct on type C board

Verify wires are correct on the back side of the connector

Try stock battery

 

Not charging