>> We also tried plugging our toaster into the microwave plug outlet, and the toaster wouldn't work in that outlet, but worked just fine in a different outlet in the RV.
This means the outlet you plug your microwave into needs to be fixed in addition to fixing the oven. Breaker? Fuse?
>> I understand from another RV forum that microwave ovens for RVs have "special circuitry and cooling features" not found in regular countertop ovens for household use.
Not really in my experience. Any microwave supplied with clean AC power and proper venting space will be fine.
But I'd bet your microwave can be fixed affordably.
The main internal things which can result in this model being dead (no display, no light when you open the door, no beep when you press a pad on the keypad) would be the 20A fuse and the magnetron temperature fuse. There could also be bad connections on the noise filter board.
Also, sometimes a power surge can cause the power to be interrupted to the low voltage transformer on the board, and I regularly repair those boards. I can also write a technical statement to your insurance company or to an RV park as needed.
At my Web site
, I have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.
The relevant service manuals for this model are here
You can order Sharp parts from Sears
Contact me directly if you need more help.
- William E. Miller, AS-EET
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"