Power supply
The power supply handles mains voltage and stores charge. Never open the brick while plugged in, discharge it before probing, and if you are unsure, replace rather than repair.
Power supply
The GameCube uses an external power brick that converts mains electricity to the low voltages the console needs. A failing brick causes random shutdowns, a console that will not power on, or instability that looks like a mainboard fault but is not.
- Check the obvious: confirm the outlet works, the brick light is on, and both ends of the cable are firmly seated.
- Swap to test: the fastest diagnosis is trying a known-good power supply. If the fault clears, the brick was the problem.
- Measure output: with care, check the brick delivers its rated voltages under load using a meter.
- Inspect inside: if you open it, look for bulging or leaking capacitors, which are a common age-related failure.
- Replace if doubtful: a marginal supply can damage the console, so favour a quality replacement over a risky repair.
Symptoms of a bad supply
- Random resets or shutdowns under load.
- Console dead with no power light despite a good outlet.
- Buzzing or heat from the brick itself.
Genuine or quality only
Stick to a genuine brick or a reputable replacement that meets the original voltage and current ratings. Cheap supplies risk the console.