This is a fairly old Panasonic microwave.
It does all the usual things that it is asked to do.
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

"Charlie Bress" wrote in message
. ..
This is a fairly old Panasonic microwave.
It does all the usual things that it is asked to do.
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



I would check all the door switches, relays, look for cracked solder joints
or bad electrolytic capacitors on the control board. It's probably something
you can fix.

On Nov 25, 2:34 pm, "Charlie Bress" wrote:
This is a fairly old Panasonic microwave.
When the door is opened, the interior light comes on again and the turntable
starts turning.

before this problem, did the light normally stay off when door was
opened?
(my old GE microwave oven always turns the light "on" when the door
is opened)

forgot to mention in previous post, have you taken the cover off
and looked inside for a schematic? (there was one inside my
old GE mw oven)

if you find one, look at what controls the turntable.

"James Sweet" writes:

"Charlie Bress" wrote in message
. ..
This is a fairly old Panasonic microwave.
It does all the usual things that it is asked to do.
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

I would check all the door switches, relays, look for cracked solder joints
or bad electrolytic capacitors on the control board. It's probably something
you can fix.

I may be a flakey door interlock switch.

I have one that does something similar, though I've never gotten around
to actually figuring out what's going on.

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Sam Goldwasser wrote:

I may be a flakey door interlock switch.


I had no idea, Sam! ;-)


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

On Nov 26, 3:57 am, "Michael A. Terrell"
wrote:
Sam Goldwasser wrote:

I may be a flakey door interlock switch.

I had no idea, Sam! ;-)

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

Picky, Picky. Instead of picking directly on Sam, you should correct
his spelling of flakey. G

Bob Hofmann

"hr(bob) " wrote:

On Nov 26, 3:57 am, "Michael A. Terrell"
wrote:
Sam Goldwasser wrote:

I may be a flakey door interlock switch.

I had no idea, Sam! ;-)

Picky, Picky. Instead of picking directly on Sam, you should correct
his spelling of flakey. G


Gee, I thought he spelled it that way for the Europeans. ;-)


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

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

No door switches should affect the turntable. The problem must be
flakey control electronics.