The biggest issue with older rv distribution panel models is that the converter is noisier which can be very distracting when running.
Rv 12 volt fuse panel.
There is no resetting fuses on an rv distribution panel.
The fuses in older models protect 12 volt battery powered systems which power lights roof vents water pump and several of the appliance on the lp mode of operation inside the coach of the rv.
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The first thing you need to do is identify what components operate on 120 volt power and what draws from the 12 volt dc system.
Determine which fuse is for the appliance circuit fuses are normally labeled and find a suitable ground for the 12 volt test light.
The 12 volt dc power goes to the lights switches and slides and to the controls of many appliances including the heater air conditioner and refrigerator.
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Fuses are not like breakers meaning once they blow they have to be replaced.
However you can test for a bad fuse to verify that is the problem.
If there is 12 volt power to the interior of the rv you need to check the fuse for the appliance in the power distribution center.
Fuse box 4 way for blade fuses ato holder block.
Test both sides of the fuse for 12 volt power.
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Place a 12 volt meter at the bare metal section on the top of the fuse.
Thanks for visiting the rv repair club site and the opportunity to assist with your power requirement issues.
The 12 volt output of your converter likely goes through two 30 amp fuses that feed your 12 volt fuse panel.
If a fuse is bad it will appear burnt a little on the inside of it.