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Old 11-11-2013, 09:57 PM   #1
Junior Member
Brand: Thor Motor Coach
State: Oregon
Posts: 1
THOR #525
Infinity motorhome electrical problem

We recently visited a friend who plugged our motorhome into 240. We immediately lost power to all of our 120 plugs. After finding the fuse box all fuses checked out but there was burning wire smell, we lost use of the inside plugs, the ability to bring in the slide electricly, as well as the steps. Running off the generator did not help either, at one point we lost our inside lights, fridge etc. The motorhome ran with headlights etc. we manually cranked in the slide and steps and headed home. We drove over a bump in the road and the lights came on as did the furnace but still no 120 plugs. We made it home but hope that someone has an answer as to what happened, and how to fix it - is it our converter? any help would be appreciated.

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Old 11-12-2013, 12:23 AM   #2
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Brand: Crossroads
State: Wisconsin
Posts: 668
THOR #124
It could very well be the converter. My knowledge on electrical is pretty limited, but I would pull the converter and see what the wire connections on the back look like. I would imagine there must be a way of testing/checking it to see if it's shot.
Hopefully somebody with a little more knowledge will chime in here and help you out.
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Old 04-22-2014, 12:05 PM   #3
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Brand: Thor Motor Coach
Model: 2011 Four Winds 28Z
State: Michigan
Posts: 1,273
THOR #531
The converter is essentially an AC to DC power supply with an intrinsic battery charger function. It supplies power to the 12V circuits in your rig - in conjunction with your batteries.

If your problem were 12v circuits, then the converter could be the culprit. However since your issue is with your 120V circuits, then the converter is not the problem.

But whenever you smell "that smell" it's never good, and something might be fried. Sometimes the damage is delayed... whatever was burning up might still work for a few weeks or months, but then when you need it most, it quits. Electrical problems such as this (as well as lightning, power surges, etc) can be finicky to troubleshoot.

Since you have lost 120V, the first thing I would ask is have you checked your breakers on the power panel? Have any of them tripped? If you are extremely lucky, this may be the only problem.

It goes without saying that while will not help you in your instance, this is a good reason why we should all have a good surge guard on board. The best of them will prevent the connection of the rig due to overvoltage conditions.

Best of luck in finding out your issue.
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120 voltage, converter, electric problem, infinity motorhome

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