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

Thanks for the feedback. The real slap in the face is that this was not a
cheap microwave and I bought two of them (one for the travel trailer) The
one in the trailer has seen little use and does not buzz - go figure. Why
can't at least one major electronics comany have consistency in quality?!
Sheesh!

I'll check for a leaky component. When the door is open the buzz goes away
(and of course the light comes on) so you may have a good idea with a door
switch.

Bruce

wrote in message
oups.com...
check for leaky door switches and leaky relay on the control panel


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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Posted to sci.electronics.repair
GregS
 
Posts: n/a
Default Panasonic Inverter Microwave - Platter motor buzz and dim light when idle

In article , "Bruce H" wrote:
Thanks for the feedback. The real slap in the face is that this was not a
cheap microwave and I bought two of them (one for the travel trailer) The
one in the trailer has seen little use and does not buzz - go figure. Why
can't at least one major electronics comany have consistency in quality?!
Sheesh!

I'll check for a leaky component. When the door is open the buzz goes away
(and of course the light comes on) so you may have a good idea with a door
switch.


I have an Inverter but my light does not come on when door is open, a real
pain for me. Is this normal??

greg

Bruce

wrote in message
roups.com...
check for leaky door switches and leaky relay on the control panel


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

Its not normal. You should get your bulb replaced, or better yet,
smashed.

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