Question about Microwave Ovens
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Posted on Jan 02, 2017
You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383
If not, please post your brand and model.
It's probably the motor, but possibly the coupler.
One quick check is to remove the turntable and support / roller ring and try to turn the coupler. It should be a little hard to get started, then you should hear a whirring sound, not a clicking or grinding, which would indicate a bad motor.
If the coupler turns loosely with no resistance, then it's probably bad.
Here is my text on replacing couplers, which had steps which are necessary when replacing motors. Note that if yours is a built-in model, ignore the part about turning it on its side *grin*
NOTES ON REPLACING TURNTABLE COUPLERS
Copyright 2007 by William E. Miller - MicrowaveDisplay.com
UNPLUG THE OVEN FROM THE WALL FIRST OR YOU WILL EXPOSE YOURSELF TO LETHAL VOLTAGES!
Note that I am not encouraging you to work on electrical items if you are not qualified, and I assume no liability for any consequences of your decision to do so.
When replacing the turntable coupler on most models, it is necessary to loosen or remove the screws that mount the turntable motor to the bottom of the chassis.
It is usually easier to do this with the microwave oven on its right (heaviest) side because you will need two hands for alignment.
Be sure to put a towel or similar cushion on the work surface to avoid scratching the oven wrapper (oven cover) or the work surface.
It is not necessary to remove the wrapper or the wires from the turntable motor itself, but you may need to remove a small metal duct covering the turntable motor if your oven has one.
It should only be held on by one or two screws.
Although a broken coupler may come out easily or even fall out, the new coupler will not go in without at least loosening the turntable motor.
Look at the hole in the new coupler. You'll notice it has (most do have) a flat side to it. That flat side will line up with the flat side on the motor shaft.
When the old coupler is out and the motor is loose, you can ease the new coupler in the hole with one hand while turning the coupler very slightly back and forth as you gently push the motor toward it. Do not force the part in.
When the coupler has mated properly with the motor, you should feel it go in.
Be sure it's right, or you may break the new coupler or bend the mounting ears of the motor when you attempt to tighten the screws.
Reassemble in reverse order.
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Posted on Jan 13, 2008
Sounds like the table motor may have an issue. You might want to consult you local repair depot for an estimate. Sometimes the repairs are more than the appliance...beware!
Posted on May 25, 2009
SOURCE: Turntable does not rotate
Well it seems that there is some fault in the turnable motor, turntable system consists of the motor and coupler, turntable support with rollers and the tray.
I have a video link to help you more on this -- how a turntable motor should sound when you rotate it by hand... please follow the below link -
If motor grinding... etc., it means you may have a bad motor or plastic coupler.
Post further comments if you need more help....
Posted on Aug 24, 2009
it could be 1 of 3 things here 1 the coupling under the plate mat be warn or broken inside so the shaft of the motor maybe turning but not turning the plate take the plate out and put a cup of water in the unit and see if coupling moves without the plate if not thn see if you can remove the coupling and repeat the test if you can see the motor shaft moving thn u need a new coupling, if not thn you may need a new motor to test th motor you will need to turn the unit on it side remove the plate first on the underside on the unit round where motor is you will see a plate this will round or square you need to cut this away to expose the motor dont throw it away as you need to refit if after, it turns round and you screw it back on, when you have found the motor remove and replace it albeit the motor is powered by the pcb it is unlikely to be the pcb as the motor runs all the time so they do ware out also do look to see if your unit has a turn table switch off button on the controls or in the manual hope this helps and dont forget to unplug ur unit from the mains.
Posted on Oct 19, 2009
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