Question about Kenmore 62702 Microwave Oven
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Posted on Jan 02, 2017
SOURCE: microwave no heat
The "HUMM" indicates a breakdown in the High Voltage Side. The loud "POP" was the breakdown. You have only four Components in the High Voltage side.
1. High Voltage Transformer. You can eliminate this as the problem. Why? If it was the problem it would have blown the line fuse, and would have given off a burned transformer smell.
2. High Voltage Diode. Usually will Burn or Pop when shorted, but will then OPEN the Circuit and there is no "HUMM".
3. High Voltage Capacitor.This is the Silver Can with the two terminals on top. It can SHORT internaly between the plates (the two terminals) and give the "HUMM".
4. Magnetron. This is my number one suspect. A SHORTED Magnetron.
Posted on Feb 03, 2008
Some numbers are missing off that model number. Would that be model 721.62622200?
(If not, please reply back with the correct model number off the tag)
If it's cooking with the programmed buttons, but Start is not working, it sounds like the keypad has failed.
The keypad for model number 721.62622200 is no longer available as a separate part.
So you'd have to buy the entire controller assembly, which includes the plastic frame, keypad, and circuit board, etc.
It is part # 4781W1M307A and it runs $110.10 at the Sears parts Web site.
We're happy to help you and we'd appreciate your thoughtful rating of our answer.
Posted on Jul 20, 2008
The turntable system
consists of the motor, the coupler, the turntable support with rollers,
and the tray.
You can see and hear a video of how a turntable motor should sound when you rotate it by hand.
If yours is not set to be off via the control panel, and it won't rotate or it sounds like it's grinding, etc., you may have a bad motor or plastic coupler.
If you don't have your owner's manual, you can just enter your full model number at the Sears parts site.
A full Sears/Kenmore model number has 3 digits, a dot, then 8 more digits, such as ###.########
On the resulting page, look to the right for the blue "View manuals" button. Click there.
That Sears-related site has many free manuals. While the manuals they list there are all free, they will ask you to register.
Many times, the owner's manual will have the installation instructions inside.
If yours is not listed there for free, you would have to order it through the Sears parts site.
That's where you could also order any needed parts and find handy exploded parts views.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answe
Posted on Jan 04, 2009
Sounds like the magnetron has failed. This is the component that produces the microwaves that heats the food.
The cost of the magnetron is about 95% of the cost of a microwave oven. Most people don't, for this reason, replace the magnetron, they replace the whole oven which is probably what you will end up doing.
There is a possibility that the circuit that provides power to the magnetron is faulty and you need to take it apart, find the proper electrical leads and test them with a volt meter. To do this you have to remove it from its mounting and take it apart. It is a fairly lengthy process however.
Posted on Apr 26, 2009
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