Roadpilot wrote:
You have a Magnum Dimensions 400 watt pure sine inverter. Input is +/- 12vdc and a chassis ground. Output appears to be via a normal wall plug.
Magnum has a trouble shooting procedure on their web site:
Trouble Shooting
I'd try that first. If it's dead they have a phone number in the trouble shooting page. Maybe they repair these?
If not I'd buy a 400-800 watt pure sine inverter woth a plug output and install in your failed units place.
Room should not be an issue because you unit is huge and it weighs 14 pounds. You'll be amazed at what will replace.
The OP has a 2001 RV with a 2001 Dimensions Inverter. HOW could he have a Magnum Dimension when Magnum was not formed until 2006??????
NOT THE SAME INVERTER! Same name but not the same Inverter
The OP's Dimension was what a lot of Motorhome makers used back then. It has a 120 plug pigtail that plugs into the wall outlet in the cabinet. All he has to do is jump the 120 wires together and that will bypass the Inverter. Back then they thought 400 watt was adequate for entertainment systems. They were for a few years and then as the Inverter aged, they did not continue the 400 watt output. Here is a link to the smaller 300 watt. Doug
https://winnebagoind.com/resources/service/pdfs/2002-06%20Dimensions%20Power%20Inverter.pdf