We've been in the same spot here at the RV park for a week. Today we noticed that the lights seem to be dimmer. It's a 50 amp park and we are using a 30 amp adapter. (stayed here many times over the...
Do you have any 12 volt voltage readout in the RV? If not I'd scrounge up a voltmeter and check voltage at batteries. With RV plugged in and power converter on it should be at least 13.2 volts (or at least close).
Also check circuit breaker for power converter and be sure it is on.
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