Question about Hotpoint Microwave Ovens
Microwave has worked well for many years. Suddenly, when I am finished cooking something and the unit powers off, when I open the door the unit starts operating again. Dangerous to say the least. I have to unplug the unit in order to get anything out of the oven without the microwave turning on and cooking my hand. Suggestions?
Posted by Anonymous on
Many microwaves have similar issues. Usually, (not always) only the light is on and the fan is running, not the section that produces the microwaves. This problem can be caused by the door switches that are out of alignment or a defective control board.
Posted on Nov 15, 2017
SOURCE: Over the range microwave
I have the R-1460 in the same series with the identical symptoms. After reading MicrowaveSvc's solution I started taking apart to view the door switches and found the upper door switch to be the problem, but not a switch failure a support failure. A small bottom plastic support post that holds the switch in place was broken (probably from repeated use/abuse) allowing the switch to move when the door hooks were engaged, thus not actuating the button switch. Since the problem was mechanical rather than an electrical bad switch, I made a small support arm for the switch from an old plastic mechanical pencil and glued it in place to hold the switch in its correct position. Problem solved, microwave works! Thanks to MicrowaveSvc's description of door switches.
Posted on May 26, 2007
SOURCE: microwave ovens
The cover is probably the magenetron. That is where the microwaves come from. If the bread was moist, it might have left condensate in the unit which is causing the sparking. Unplug the unit, leave the door open over night. If you can remove that cover, do so. Be sure to carefully replace it before using the unit. Never turn on a microwave with nothing in it.
Posted on Dec 17, 2007
Sounds like a short in the microwave circuit. One or more of the following four components has failed -
Repair is not for the amateur, unless you know how to take things apart, and put them back together EXACTLY as the were found.
Parts are available on the Net, and you can get the P/N's off the old components to identify suppliers of the new ones.
Don't try and measure resistance of the diode. It's impedance is far too high to get a good reading. They're cheap anyway. Always replace the capacitor, they're cheap too. No way to test the magnetron, and the transformer is not easy to test either.
Posted on Jan 16, 2009
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Generally, the most common causes of a failure to heat are:
- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose conneciton on the control unit circuit board
- bad magnetron or other high voltage part
If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and
disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk
You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383
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