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Default A different kind of microwave problem

This is a fairly old Panasonic microwave.
It does all the usual things that it is asked to.
It heats.
The timer times.
The turntable rotates.

It seems to have developed a mind of its own.

Occasionally, after it is through heating and shuts off it does something
strange.

When the door is opened, the interior light comes on again and the turntable
starts turning.
During this time it is not trying to heat. The off button does not affect
this action. Close the door and the light goes out and the turntable stops.
After a bit it reverts back to normal and stays truly off as expected.

Is this phenomenon governed by the control electronics, which would probably
call for a replacement microwave or is it caused be the failure or
misadjustment of one or more of the mechanical switches that could be
remedied by a DIYer?

Charlie


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Default A different kind of microwave problem

Charlie Bress wrote:

This is a fairly old Panasonic microwave.
It does all the usual things that it is asked to.
It heats.
The timer times.
The turntable rotates.

It seems to have developed a mind of its own.

Occasionally, after it is through heating and shuts off it does something
strange.

When the door is opened, the interior light comes on again and the turntable
starts turning.
During this time it is not trying to heat. The off button does not affect
this action. Close the door and the light goes out and the turntable stops.
After a bit it reverts back to normal and stays truly off as expected.

Is this phenomenon governed by the control electronics, which would probably
call for a replacement microwave or is it caused be the failure or
misadjustment of one or more of the mechanical switches that could be
remedied by a DIYer?

Charlie


Hi,
You know that there is two interlock switches on the door latch.(one at
the top and one at the bottom). Those two switch works in certain
sequence. When they don't, oven does weird things.
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Default A different kind of microwave problem

On Sat, 24 Nov 2007 14:04:52 -0500, Charlie Bress wrote:


This is a fairly old Panasonic microwave.
It does all the usual things that it is asked to.
It heats.
The timer times.
The turntable rotates.


It seems to have developed a mind of its own.


Occasionally, after it is through heating and shuts off it does something
strange.


When the door is opened, the interior light comes on again and the turntable
starts turning.
During this time it is not trying to heat. The off button does not affect
this action. Close the door and the light goes out and the turntable stops.
After a bit it reverts back to normal and stays truly off as expected.


Is this phenomenon governed by the control electronics, which would probably
call for a replacement microwave or is it caused be the failure or
misadjustment of one or more of the mechanical switches that could be
remedied by a DIYer?


Sounds like an output device on the control board has become flakey.
There are no adjustments involved.
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