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Posted by Van Chocstraw on November 20, 2009, 10:00 am
Jess wrote:
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> Why would the below be happening?
>
> 1. 12 year old over the range microwave stopped working - no power.
> 2. Microwave on its own dedicated 20 amp circuit.
> 3. No other outlets or devices on this circuit.
> 4. The circuit breaker was NOT tripped.
> 5. Reset the breaker several times (off-on-off). Power restored to the
> microwave (enough to display the clock), but as soon as you try to
> cook something the microwave looses power and the circuit panel
> breaker is NOT tripped.
> 6. Assumed the microwave was bad and bought a new one.
> 7. Exact same problem with the new microwave.
> 8. Recycled the breaker several times to get power to the microwave
> again (so the clock displays), but did not try to cook anything.
> Unplugged microwave and plugged in a hair dryer. Tryed to run the hair
> dryer - no power and circuit breaker NOT tripped.
> 9. Microwave works perfectly when plugged into another circuit.
> 10. Assumed the circuit breaker itself was defective.
> 11. Replaced the circuit breaker with a new one and still have the
> exact same problem.
>
> So now logically, it seems that the only problem it could be is
> something with the wiring itself. This circuit has worked without
> problem for the last 12 years.
>
> Could someone provide some guesses as to what the problem might be?
>
> Thank you,
> Jess
>
> (search key word = JessJoeMama)
Most of them have a buss fuse inside the cabinet. More than likely the
thing is drawing more current in old age. Take it apart and put in a
larger fuse as I did before. Then it worked fine.
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>
> 1. 12 year old over the range microwave stopped working - no power.
> 2. Microwave on its own dedicated 20 amp circuit.
> 3. No other outlets or devices on this circuit.
> 4. The circuit breaker was NOT tripped.
> 5. Reset the breaker several times (off-on-off). Power restored to the
> microwave (enough to display the clock), but as soon as you try to
> cook something the microwave looses power and the circuit panel
> breaker is NOT tripped.
> 6. Assumed the microwave was bad and bought a new one.
> 7. Exact same problem with the new microwave.
> 8. Recycled the breaker several times to get power to the microwave
> again (so the clock displays), but did not try to cook anything.
> Unplugged microwave and plugged in a hair dryer. Tryed to run the hair
> dryer - no power and circuit breaker NOT tripped.
> 9. Microwave works perfectly when plugged into another circuit.
> 10. Assumed the circuit breaker itself was defective.
> 11. Replaced the circuit breaker with a new one and still have the
> exact same problem.
>
> So now logically, it seems that the only problem it could be is
> something with the wiring itself. This circuit has worked without
> problem for the last 12 years.
>
> Could someone provide some guesses as to what the problem might be?
>
> Thank you,
> Jess
>
> (search key word = JessJoeMama)