My daughter thought she set the kitchen timer on the microwave for 20 minutes but actually turned it on for that length of time. The plastic dinner plate cover we keep in there melted to a puddle and the microwave has no indication of power. Fuse is still good. Any chance there is a reset button or thermal protection diode that could be replaced or is this most likely done for ?
There are two thermal protectors which may be blown. If so, it will measure open (infinity) instead of closed (zero ohms).
One is located on the magnetron and one is on top of the oven cavity.
(There is also one located on the floor / base of the microwave but that one's not at issue.)
The magnetron thermal protector *may* be accessible by removing the control panel, but to access the oven cavity thermal protector, you will have to remove the oven from the wall.
If
so, the installation instructions here are very handy, and it's best to have
two people since the microwave can be heavy and awkward.
At
our Web site, we have a video
available showing how to remove a typical
over the range control panel assembly in under 5 minutes.
You can order parts from Encompass here or you can call them toll-free at 866-779-5835.
We're
happy to help you with free advice and we'd appreciate your
thoughtful rating of our answer.
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Goldstar over the range MV1515w
Thank you for your help on this matter. I think I am getting closer to a fix but am stuck on a parts issue. On my model, Goldstar (LG) MV-1515w, I found that the oven cavity thermostat was still good, while the floor thermostat was bad. I can get this part. However, there is also a rectangularly shaped thermostat of sorts (temperature and voltage are stamped on it) which has two blades for wire in/wire out. This tested bad. It does not show up on the parts diagrams I have been able to find. I have taken pictures of it if there is a way to post them. It may be this is to measure the temperature of the wires rather than the ambient temp of the unit?
You had also mentioned that there was a thermostat on the magnetron. While the parts diagram shows one in that location, I do not have one on my unit.
It probably has a thermal cutout or thermostat that needs to be replaced. Please reply back with your brand and model number so we can help you.
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