If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site.
This is likely to be one or more of these problems:
- bad door switch or loose / broken door switch mount
- sticking keypad
- failing turntable motor
The key questions are:
1. When it runs by itself, what is shown on the display? Is the display the same each time?
2. Is it actually heating when it runs by itself, or is it a case where the inside light and cooling fan are coming on, but nothing else?
There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting.
At our site, we now have a video available showing how to remove the grille and a typical control panel assembly in under 5 minutes.
If you need further help, I would urge you to scan and e-mail me the schematic / wiring diagram page from the mini-manual (we don't have the one from that model).
With that, and with the answers to the above questions, I should be able to give you more detail.
I can also send you helpful info on replacing the keypad yourself, if that's called for.
William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com
William E. Miller, AS-EET
June 2008
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix microwaves.