No power on a 2007 236.

[Laptom]

When pulling a wakeboarder yesterday the boat suddenly dropped all power (electric). Gauges remain last position, but nothing worked.
After 5 min of pressing all circuit breakers randomly we sudden got power back and ran whole evening without issues. Any ideas what this could been?

Boat is completely original, but fully loaded has zr6 and about 500 hrs.