Question about Microwave Ovens

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Turntable stopped rotating. Switch light still comes on

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  • raycathys May 28, 2011

    When asked to select brand of microwave Tappan wasn't listed. I did list the information in a previous section of the form and is as follows: Tappan Turnabout Microwave Oven, FCC ID: ABM964T04,

    The oven is built-in and integral with a conventional oven and of course replacing it because of the inoperative turntable is an expensive option. The unit is about 22 years old.

    Your response is appreciated.



  • raycathys May 28, 2011

    After further investigation the part number was wrong. The correct part number was nowhere to be found on the microwave unit. It was found on the registration card, which fortunately I was able to locate and is 57-2707-10/03.

  • raycathys May 28, 2011

    I found a site that lists the motor but states call for price. I'll have to wait until Monday. In the meantime, do you have the procedure for replacing it?

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Hi,

The microwave oven's turntable plate is commonly driven by the mechanisms of a turntable motor. This part of the microwave oven is very important for it helps cook the food evenly. This turntable motor is continually rotating despite the fact that the heat switches from on and off cycle during cooking.

Problems that commonly arise with the microwave turntable like it stops spinning can be the result in the failures of the turntable motor, turntable coupling/drive and the turntable roller ring.
If these components are faulty, replace them immediately. Below are the steps on replacing the microwave turntable.

Here's how to and what to consider in part replacement in case needed so:

Step 1 - Identify
Identify the correct turntable for your microwave oven. All microwave turntables are definitely not the same. They can be identical in the physical look and measurement, but you can't easily match any turntable to any microwave model by the basis of sight only.
Specific turntables are used for specific models. For instance, a turntable made for Panasonic model will not likely fit in a Kenmore model although they may look similar. The turntable on the old models may not fit the latest models of the same brand.

Step 2 - Brand and Model of Your Microwave
To find out the correct turntable that you need, you need to identify first the brand and the model number of your microwave. The model number can be located on the same label containing the serial number as well as the manufacturing date.
This tag can be found commonly inside the oven on either the back or the left hand wall of the unit. Sometimes, it can be located on the side of the panel frame or inside the door frame.

Step 3 - Part Number
As soon as the model number had been obtained, obtain the part number with the manufacturer's website or an online retailer. Most of these sites have turntables that are categorized according to model numbers that have the corresponding part numbers.
When you have already the part number of the needed turntable, shop around before purchasing and you will find a wide range of turntable prices. Those manufacturers and large companies have the highest prices. Be wise in choosing the online retailer on which you will purchase the microwave part.
There are some instances that it will be a wise decision to purchase a new microwave oven than to replace a damaged part. For example, if you have a 10-year old microwave oven and it will cost you a lot to buy an expensive part, it will be economical if you will buy a new microwave oven.

Step 4 - Unplug your microwave oven
If you have already the new turntable part on hand, then you are ready to replace the damaged one. Unplug the oven from the main outlet and carefully remove the damaged turntable and the ring.

Step 5 - Remove the motor housing
It is recommended to place a towel on the flat working surface and cautiously turn the oven upside down. Retaining screws must be removed from the motor housing and then lift it off.

Step 6 - Replace turntable
For consistency, mark the different positions of the wires, unscrew the turntable and replace it with the new turntable with the same appliance part number with the damaged one.

Step 7- Reconnect the wires
Using the marks, reconnect the wires and fit out again the screws and the motor housing.

Step 8 - Test it
Return the oven to its upright position, plug it in and test the operation of the motor if it functions properly.

Unfortunately, I don't know the brand and model of your Microwave Oven. The solution I offered is generally for all Microwave ovens whose turntable stopped rotating even though the oven is ON. Thank you for visiting FixYa! should you have any questions please feel free to post it here.

Posted on May 28, 2011

  • 1 more comment 
  • rey francis basa
    rey francis basa May 28, 2011

    Hi,

    22 years old huh. That explains it. Anyhow, I went to this website, http://www.appliancepartspros.com/_tappa... and was able to locate Tappan. Unfortunately I don't know what model you have. The FCC number you provided was recognized as a GE air conditioning unit. You can try looking for the model number and going to the site above and see if it helps.

    Thank you for visiting FixYa! have a good one.

  • rey francis basa
    rey francis basa May 28, 2011

    Nice luck! Unfortunately upon checking for the part we need, it shows that most of the parts for this equipment were tagged as unavailable since manufacturer had stopped manufacturing them.

  • rey francis basa
    rey francis basa May 28, 2011

    I found a manual but this looks like it was made before I was born, it is not that detailed but I hope it helps. Go to this website http://www.appliancepartspros.com/partse.... You will find it there.

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1 Answer

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Sure, if parts are available.
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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.

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Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.

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There are plastic mounts inside the microwave which hold the door switches and onto which the door hooks latch when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. Other times, it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383 or here.

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