Question about Dryers
Timer and power work but doesn't heat or turn
Posted by Anonymous on
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Posted on Jan 02, 2017
A microwave can be dead for many reasons.
The fuse is normally located on the floor of the chassis behind the control panel or between the door switches.
If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.
If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.
Then when it cools, it closes the circuit and allows power through again.
When checking thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.
If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.
If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.
If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.
If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.
You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.
If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.
If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
We're happy to help and we appreciate your thoughtful rating of our answer.
Posted on Jun 23, 2008
The turntable system consists of the motor, the coupler, the turntable support with rollers, and the tray.
You can see and hear a video of how a turntable motor should sound when you rotate it by hand.
If yours is not set to be off via the control panel, and it won't rotate or it sounds like it's grinding, etc., you may have a bad motor or plastic coupler.
To replace either, you need to unplug power, then remove the bottom cover of the oven. In some brands, you have to cut the motor cover off with snips, then use a screw when reassembling it.
The best place to order Sharp parts is Tritronics. You can also call them at 866-779-5835
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Nov 21, 2008
SOURCE: Microwave isn't heating???
This will happen if the cut-off fuse is blown or, the Magnetron is damaged. you can check the fuse by removing the outside protective cover. After the removal of the cover, you will need to located the noise filter. there is a fuse on this board. check it for continuity with a ohm meter. if the fuse is ok, replace the Magnetron.
There is also a diode in the same area. you can test this component as well. If the fuse and diode are faulty or damaged, replace them.
Posted on Jun 22, 2009
I don't know of a reset button but there is a fuse that you have to remove the outer cover to get to that has a habit of blowing
Posted on Sep 01, 2010
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Hi, Microwave Oven Troubleshooting Tips
Here is a tip that will help you to figure out what is wrong with your Microwave Oven....
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