Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Bruce H
 
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Default Panasonic Inverter Microwave - Platter motor buzz and dim light when idle

Subject:
Panasonic NN-S563WF
S/N: 6B43180461
Mfr Date: April 2003

Problem: The platter motor buzzes or vibrates (no visual motion) and the
interior light has a very faint glow when the unit is in idle. Otherwise
the microwave works fine.

In checking a few components, I found what appears to be an encapsulated
wirewound resistor under the main transformer that tests open. I know
someone else on here tried testing the high voltage diodes unsuccessfully as
they seem to require a high forward bias voltage. However, since the
microwave works, I don't think there is a problem with the diodes.

Does anyone have a schematic? What is the component under the transformer?
I would like to avoid replacing the whole board as that seems such a waste.
I really hate the way electronics have become "disposable". Has anyone come
across this "vibrating/buzzing motor" problem?

Bruce


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Posted to sci.electronics.repair
Dani
 
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Default Panasonic Inverter Microwave - Platter motor buzz and dim light when idle

Welcome to low end...so called state of the art electronics! All this
is
normal for this unit! Look he

http://www.recommendedbuys.com/home-...rp-r-510hk.htm


Bruce H wrote:
Subject:
Panasonic NN-S563WF
S/N: 6B43180461
Mfr Date: April 2003

Problem: The platter motor buzzes or vibrates (no visual motion) and the
interior light has a very faint glow when the unit is in idle. Otherwise
the microwave works fine.

In checking a few components, I found what appears to be an encapsulated
wirewound resistor under the main transformer that tests open. I know
someone else on here tried testing the high voltage diodes unsuccessfully as
they seem to require a high forward bias voltage. However, since the
microwave works, I don't think there is a problem with the diodes.

Does anyone have a schematic? What is the component under the transformer?
I would like to avoid replacing the whole board as that seems such a waste.
I really hate the way electronics have become "disposable". Has anyone come
across this "vibrating/buzzing motor" problem?

Bruce


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