Question about Whirlpool GH7208XR Convection / Microwave Oven
Model 3183566 is a built-in microwave (although separate from the oven behind a mounting/framing kit. It was installed in 1994 when the house was built (I believe).
Problem: In the middle of cooking, I stopped the microwave to check on food status by just opening the door (as I have always done). I shut the door and pressed start to continue. There was a click and no engagement. Light/keypad/timer still works. Heat/turn table/fan will not come on. I took the framing kit off and the keypad to get to the fuse. There doesn't appear to be anything blown on the keypad circuit board and the fuse is fine (light wouldn't come on if it was out anyway).
If I took it somewhere for service, where would you recommend?
SOURCE: No heat
The most likely causes are defective a door switch (or switch mount), a bad connection in the high voltage section, or on the controller. I would direct you to my safety text file and door switch text file for critical safety info anf info on testing & replacing door switches. You can find it via searching on Yahoo.com (not Google) for: microwave safety.txt After you check that out, please repost so we can hel you further.
Posted on Nov 28, 2006
This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.
This can often also affect the exhaust fan operation, too. The lights and fan can be inoperable or stuck on too.
Details of our service and critical safety information and disassembly information is at our site, linked here on Fixya:
Posted on Nov 28, 2007
SOURCE: I have a Whirlpool AMW545
the controller for the turntable is shorted out or welded its contact if its a relay. the door has safety switches that turns off the electrical connection to the turntable and magnetron once you open the door. you can trace the switch that runs the turntable. start from the power supply, goes to the door switch then to the controller before it goes to the turntable motor. i'm sure it has an electrical diagram at the inner wall of the cover.
i hope i was able to help.
Posted on Jun 27, 2008
You can see and hear a video of how a turntable motor should sound when you rotate it by hand.
If yours 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. You may have to cut the cover off with snips, then use a screw when reassembling it.
We have the full service manual for this oven, and have uploaded it to our site here.
The best place to order Sharp parts is Tritronics.
We're happy to help and we appreciate your thoughtful rating of our answer.
Posted on Jul 13, 2008
With the symptoms you mention, I would suspect:
- loose or corroded connection at the magnetron
- bad magnetron
- shorted high voltage diode
You can usually find helpful exploded view diagrams and order parts by entering your full model number here.
There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.
Here are some links you or someone you know can use for test help, but read their safety warnings first:
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Aug 21, 2008
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Replacing the turntable motor.
The motor assembly is fixed to the base
of the oven usually with two screws and access i obtained by removing
the inspection plate directly beneath the motor. It is usally a plug
in synchronus motor that revolves at a few revs per minute but the
plastic cogs in the motors gear box fail and the motor assembly must
be replaced. They are fairly inexpensive and obtainable usually from
a domestic appliance repair shop.
If you feel confident, disconnect it from the mains power, remove anything in the cavity and turn it upside down if it is a tabletop model, a little more complicated if it is built in!
Remove the inspection plate and disconnect the motor. Remove the motor and go and get a new one. Re fit it and put the microwave back in its position. Plug it back in, with the turntable and plate. Put a cup of water on the plate inside of the oven and heat for 20 seconds to check the plate goes round.
Hope this helps.
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