Originally Posted by Travishunt
I think your correct, it a univolt converter. The landline 120v is connected. There is no battery but there were leads going to where the battery was stored, I disconnected the leads since they were still hot. Are you suggesting that I should just scrap the converter and upgrade to new unit?
Yes, they don't last forever and are known to cause various issues. A replacement is in the $200 range. Get it from somebody you can talk to on the phone. Don't just buy it on Amazon ....
Replacing the converter is a good idea, but likely not the entire solution. There are some checks that need to be done. Getting a pro in to do this is an ok way to go. Not everything is DIY.
Grab your multimeter and see if the ground lug on the shore power shows continuity to the chassis. If not, fix that.
Now move back to the far end of your shore power cord and do the same check. If it's still connected, that's great. If not ... .fix it.
Next check the ground on your power source. If it's not hooked up, that's a problem.
At this point, the chassis of the trailer should be ok in terms of 120V.
Next up is to check the 12V negative and make sure it is hooked to the chassis. The process is the same.
Once you get the chassis hooked up, you may find beakers popping or fuses blowing. They need to be tracked down and the issue addressed.
Once you replace the converter, the obvious problem may go away even without running through all the checks above. You still need to get the ground fixed. The converter is just showing you that there is a problem there.