Question about Microwave Ovens
Our Kenmore 721.80803401 is approximately 3 years old and has had the same problem from day one. The rotating/sliding table jumps up and completely disengages from the rotating arm. As some others have noted, the problem will come and go, sometimes occurring frequently and then will disappear for several weeks. I have completely removed/inspected the table assembly from the microwave but have not been able to identify any sticking/damaged parts. The only questionable thing I found was that the rotating arm would sometimes pop out of its center hole, completely disengaging from the internal rotating mechanism. This would definitely cause the table assembly to stop turning and drop out mechanical time with the motor. I have been carefully inspecting the arm to make sure it is inserted completely but the problem has still been occurring.
When the table assembly pops up, the cooking liquid will often spill all over the glass plate resulting in a big clean-up. Other times we will be out of the room and not notice that the rotating table has stopped and the food will not cook properly.
If anyone has solved this problem, please post the solution as I am just about frustrated to the point of replacing this microwave/range hood.
I have the same microwave with the same problem. I called the tech support the first week after purchasing the unit because the tray was "jumping" and they sent me a new "rotating arm." That fixed the problem for about 3 years, then the same thing happened. I did not feel like spending $20 or so on new one... I took it apart and found that the "arm" (microwave ring) could/should be about 1/2 inch deeper/longer in order to fit over the motor. (it is holding on about 1/4" which slips and strips the microwave ring). The design sucks so the easiest thing is to keep buying new rings for it... I was hoping I would find a recall on this, but no such luck...
Posted on Nov 01, 2012
I would bet the arm ("ring assembly") is either worn or warped from
heat? and is not meshing well with the motor shaft or glass tray.
That is part number 4351W1A003A and you can get it for only $6.30 (compared to over sixteen via Sears) from Tritronics.
The motor is part # 6549W1S018C and if it's the culprit, you can get that for $24.84 from Tritronics, compared to almost thirty-two from Sears.
You should look again and see how loose the arm is on the shaft and which might be worn or warped or out of perpendicular. I think that one of these is the problem.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Dec 21, 2008
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Posted on Jan 02, 2017
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