Control Panel Problem

[uwe]

My control panel ( in front cap, over front overhead storage compt.) intermittently loses power. This has been a recurring problem during the last few camping trips. We were on full hook-ups, so it did not matter much. Only the radio/cd combo did not work, because it is powered via this panel.
I notice the radio go off, and then I have no more water pump, tank sensor lights etc. Basically everything in this panel goes dead.
I figured it would be a grounding problem, and added a solid grounding wire to the shell, but it did not make a difference. I removed, inspected and re-installed severla times, checking for loose wires or connections. Nothing!
So i am looking for advice and a wiring diagram.
Thanks,
Uwe

[Pahaska]

Check the color of the hot wire coming into the control panel. There should be a matching color in your fuse/circuit breaker panel, whichever you have. The fuse or CB may very well be intermittent.

While it is out, you might try carefully using a wire or tool to bridge over to an adjacent circuit. If it comes on, it is the fuse or CB.