Time to throw it away. Microwave ovens can be dangerous if not working correctly. Micro-waves, (The actual waves themselves) can be lethal. Unless you really know what you are doing, do not under any circumstances dismantle the machine and switch it on. The cabinet of the machine is designed as a protective box and should stop random waves escaping and cooking anything else including you own insides. Generally Microwave ovens are uneconomical to repair, for the parts and labour you can buy a new one. Buy the most powerful you can. If you buy anything that is below 1000 Watts make sure it has a turn table. Remember that the more you place in a microwave oven, the longer it takes to cook. If you have a big family and you can afford it, you might like to think about a commercial oven 1600 - 1800 watts, that can cope well with large quantities well and will cook a tin of baked beans in less than a minute.
Rgs. Bob
SOURCE: Panasonic microwave start button
You may have a sticky door switch. Try a simple "slamming" of the door, don't over do it, just a little harder than normal. This may help pop the plunger in the switch back up. The switch could have also become loose and moved out of its adjustment.
If this does not help, a technician should save you time and money with this sometimes perplexing problem.
SOURCE: Kenwood microwave (KEN GJ/SS25) heating doesn't work but grill works
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
SOURCE: GE JVM1850CH06 microwave no heat with loud humming sound
With the details you described, the high voltage diode might be shorted( usually HVR 1X). It is connected from the Capacitor and the chassis, or else the capacitor is the one at fault,but not common .
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