I have that appliance since 2002, it acts well, but all of asudden it works, rotates, all functions work except heating, it doesn'g produce any heat, and I am in Cairo Egypt, is htere any technucal suooort around. thanks my name is Sami email adress: [email protected]
Either the diode most use, the large filter cap, the inverter which drives the Magnetron that does the heating or the Magnetron itself.
typical diode used on left and Magnetron on right.
SOURCE: My Sharp R-340D microwave works perfectly but Does NOT HEAT FOOD
Waleed, Since the microwave is going through all its motions we can feel safe that the oven and magnetron thermostats are ok. If they were bad you would not have a display. Just inside the control panel to the left, you have 3 switches which the door activates. A primary (top switch) a secondary (bottom switch) and a monitor switch (middle). If the primary or secondary switch is not closing when the door is shut, you high voltage side will not activate, therefore no heat. If the monitor switch failed or found either the primary or secondary switch closed with the door open, it would blow the main fuse and the oven would be dead. Therefore Im leaning on either the primary or secondary switch not operating correctly. When checking these switches, unplug and discharge the capacitor. This is high voltage. Good luck
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: Microwave will run but will not heat?
**CAUTION**
HIGH VOLTAGE IS PRESENT IN CAPACITORS. THIS COULD SERIOUSLY INJURE YOU. DO NOT ATTEMPT IF YOU ARE INEXPERIENCED! IT IS CHEAPER TO BUY A NEW MICROWAVE THAN PAY FOR AN EMERGENCY ROOM VISIT.
The magnetron probably needs to be replaced. You can test it with these instructions.
http://www.gallawa.com/microtech/mag_test.html
SOURCE: Not working
When the microwave sounds okay, but there's no heat, one of the internal door switches, the high voltage circuitry, or the circuit board may have a problem. To resolve this problem, you need the assistance of a qualified appliance repair technician, as repairing microwaves is a pretty risky job.
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