Panasonic Microwave

[DS]

Went to nuke something in our 12 year old Panasonic convection microwave and it
seems the device has given up the ghost. The broiler function still seems to work,
as does the control panel, but whenever the magnetron is supposed to kick in it
just makes a loud buzzing or humming sound and no heat is induced into the food
that I want heated. Even a glass of water remains cold. If I set it to medium
(approximately 50/50 duty cycle), when the cycle starts, loud buzzing, when the
cycle is off, makes the regular hum.. all the same, no heat.

Stats:
Manufactureranasonic
Model: NN-6952
Description: Microwave w/broiler & "genius function"
Wattage (microwave output): 900W
Year of manufacture: 1992

So the question: is it worth taking it to a repair shop to get fixed, or should I
just go get a new one? Any guesses as to whats wrong?

Thanks
-Dan

 

[woodward_electric]

bad magnetron or hv diode get it checked by a service center diodes ore
cheap abut the magnetron is more money

 

[DS]

bad magnetron or hv diode get it checked by a service center diodes ore
cheap abut the magnetron is more money

I'm thinking that it is probably the HV diode that has failed (after reading up on
it on other websites).. At this point I dont have the time to dismantle it to test
it, but how would I go about getting a new one? Do I need to replace it with an
identical part number from Panasonic or would a "generic microwave HV diode" work?

Thanks
-Dan

 

[Sam Goldwasser]

I'm thinking that it is probably the HV diode that has failed (after reading up on
it on other websites).. At this point I dont have the time to dismantle it to test
it, but how would I go about getting a new one? Do I need to replace it with an
identical part number from Panasonic or would a "generic microwave HV diode" work?

Probably not, generic replacements are available. But how are you so sure
it is the diode? Or is it just that if it's anything else, not worth it?
A shorted magnetron could result in identical symptoms.

See the Microwave Oven Repair Guide at the site below, especially the
SAFETY info.

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[DS]

work?

Probably not, generic replacements are available. But how are you so sure
it is the diode? Or is it just that if it's anything else, not worth it?
A shorted magnetron could result in identical symptoms.

See the Microwave Oven Repair Guide at the site below, especially the
SAFETY info.

Hi Sam,
A diode I figure to be about $10-20 to fix.. a magnetron isn't worth it. I found
on a panasonic repair page that for a similar model if it makes a loud hum with no
heat but other functions work, in conjunction with a fried electronic smell, it is
most likely a diode.. so here's hoping

In the meantime we just bought a new Panasonic unit with "inverter technology".
Once exams are done I'll try repairing the old one.. if I can get it working I'll
take it with when I move out sometime down the road

Thanks for the help
-Dan