2018 Axis 24.1 Radios unpowered

[AlphaMax]

I just reinstalled the house batteries. I clumsily got a reverse polarity when two leads touched and it blew a single 15a fuse in the pane in the coachl. I got that replaced and then connected the batteries correctly. I tested the electrical components and all seems to work - generator, shore power, and alternator all charging the house batteries and all fuses, breakers intact.

The Axerra dash radio and the Jensen rear radio remain unpowered and won't respond to a reset. I cannot figure out why they're not turning on or powered. Thanks for any insight.

[AlphaMax]

I found the 10a fuse on the back of the Jensen in the rear bedroom blown. Replaced it and all is well with that radio. The 15a fuse on the back of the Axerra is fine - replaced it with new, just in case. Still no power from the Axerra in the dash.

[16ACE27]

Sounds like you need to break out the voltmeter and start tracing for power back from the two power leads to the radio.

[AlphaMax]

More digging, still not solved. I found the yellow wire input had 0vdc. I found the in-line 15a fuse near the Trombetta was blown. Once replaced, the yellow wire input has ~13vdc but now the 15a fuse in the radio is blowing. I have a new/replacement radio just in case but that fuse blew as well.

So I'm guessing a short somewhere associated with that yellow wire? Ugh.