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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Default GE profile built-in Microwave & oven problem -need advice

Dear folks,
I have a 2000/2001 model of GE built-in microwave & oven and it becomes
not working today. Here is the symptoms:

1. Turn-table is not turning and we can not heat up the foods.
2. All other functions work (Oven is OK, clock is ok, .....etc)

Can you please share with me what could be the problem and how to fix
it. Thanks.

Best Regards,
Thomas

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Default GE profile built-in Microwave & oven problem -need advice


wrote in message
oups.com...

1. Turn-table is not turning and we can not heat up the foods.
2. All other functions work (Oven is OK, clock is ok, .....etc)

Can you please share with me what could be the problem and how to fix
it. Thanks.


A microwave is the most deadly appliance to repair. Get a professional to
repair it.

From http://www.repairfaq.org/sam/micfaq.htm : -

WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING!

Microwave ovens are probably the most dangerous of consumer appliances to
service. Very high voltages (up to 5000 V) at potentially very high currents
(AMPs) are present when operating - deadly combination. These dangers do not
go away even when unplugged as there is an energy storage device - a high
voltage capacitor - that can retain a dangerous charge for a long time. If
you have the slightest doubts about your knowledge and abilities to deal
with these hazards, replace the oven or have it professionally repaired.

Careless troubleshooting of a microwave oven can not only can fry you from
high voltages at relatively high currents but can microwave irradiate you as
well. When you remove the metal cover of the microwave oven you expose
yourself to dangerous - potentially lethal - electrical connections. You may
also be exposed to potentially harmful levels of microwave emissions if you
run the oven with the cover off and there is damage or misalignment to the
waveguide to the oven chamber.

There is a high voltage capacitor in the microwave generator. Always ensure
that it is totally discharged before even thinking about touching or probing
anything in the high voltage power circuits. See the troubleshooting
sections later in this document.

To prevent the possibility of extremely dangerous electric shock, unplug the
oven from the AC outlet before removing the cover and do not plug it in to
operate it with the cover off if at all possible. If you must probe live,
remove the connections to the magnetron (see below) to prevent the
inadvertent generation of microwaves except when this is absolutely needed
during troubleshooting. Discharge the high voltage capacitor (with the oven
unplugged) and then use clip leads to make any connections before you plug
it in and apply power. Then after removing power and unplugging the oven
discharge the HV capacitor once again.

WARNING: Experienced technicians have been electrocuted deader than a brick
from even careful probing of the HV circuits of a powered microwave oven.
Therefore, I highly recommend avoiding any probing of the HV circuits -
nearly everything can be determined by inspection and component tests with
the oven unplugged.

The microwave oven circuitry is especially hazardous because the return for
the high voltage is the chassis - it is not isolated. In addition, the HV
may exceed 5000 V peak with a continuous current rating of over .25 AMP at
50/60 Hz - the continuous power rating of the HV transformer may exceed
1,500 W with short term availability of much greater power. Always observe
high voltage protocol.




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Default GE profile built-in Microwave & oven problem -need advice

Homer J Simpson wrote:
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yourself to dangerous - potentially lethal - electrical connections. You may
also be exposed to potentially harmful levels of microwave emissions if you
run the oven with the cover off


not really, not unless you take an axe to it first.

and there is damage or misalignment to the
waveguide to the oven chamber.


which is all steel and welded in place.


NT

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Default GE profile built-in Microwave & oven problem -need advice


wrote in message
oups.com...

yourself to dangerous - potentially lethal - electrical connections. You
may
also be exposed to potentially harmful levels of microwave emissions if
you
run the oven with the cover off


not really, not unless you take an axe to it first.

and there is damage or misalignment to the
waveguide to the oven chamber.


which is all steel and welded in place.


You know that. I know that. Does the OP really understand all of the risks
fully and completely?





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Default GE profile built-in Microwave & oven problem -need advice

check the door switches


"Homer J Simpson" wrote in message
news:BzT2h.40469$P7.13189@edtnps89...

wrote in message
oups.com...

yourself to dangerous - potentially lethal - electrical connections. You
may
also be exposed to potentially harmful levels of microwave emissions if
you
run the oven with the cover off


not really, not unless you take an axe to it first.

and there is damage or misalignment to the
waveguide to the oven chamber.


which is all steel and welded in place.


You know that. I know that. Does the OP really understand all of the risks
fully and completely?





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