Question about Frigidaire GLMV169D Microwave Oven

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Model GLMV169DQA: Significant ''arcing'' or ''flashing''

Just started arcing, two or three times per revolution of turntable while re-heating a plate of spaghetti with meat sauce uncovered and then covered with plastic.

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Quite often this is due to grease or food particles stuck somewhere n the cavity of the oven or stuck on or behind the waveguide cover.

The waveguide cover (also called a spatter shield) is usually about the size of a playing card and often held in place by a plastic rivet.

In some models it is a larger stirrer cover type made of thicker plastic in the ceiling of the oven.

It can be fragile, and the metal edges of the oven behind it can be sharp, so be careful!

The cover and the metal behind it should be cleaned with a mild, non-ammonia cleaner.

If the cavity metal of the oven is chipped or charred, it will have to be sanded smooth and clean and dried thoroughly.

Then you can apply some high-temperature appliance paint, available from places like Wal-Mart, Lowe's or Builder's Square.

If your waveguide cover is burned, it will need to be replaced. It provides important protection for the magnetron.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Nov 21, 2008

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Oven began to spark and smell. The waveguide cover broke apart & scorched side now won't heat. Clock/light work so does the turntable but groans. Is it fixable or done?


It is possible the magnetron may have been destroyed. Arcing in the waveguide would likely cause a significant increase of cathode to plate current through it; possibly melting it internally. You could also have failure of the high voltage rectifier; caused also by high current. If that's the only problem, then it's possibly repairable for a reasonable cost. You would have to repair and repainted the waveguide. Some waveguides have a vertical bar in them to aid in dispersion of the microwaves. If this is loose and shorting, then you'd have to replace the entire frame/cavity. Not very practical.

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Replacing the turntable motor.

The motor assembly is fixed to the base of the oven usually with two screws and access i obtained by removing the inspection plate directly beneath the motor. It is usally a plug in synchronus motor that revolves at a few revs per minute but the plastic cogs in the motors gear box fail and the motor assembly must be replaced. They are fairly inexpensive and obtainable usually from a domestic appliance repair shop.
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Replacing the turntable motor.

The motor assembly is fixed to the base of the oven usually with two screws and access i obtained by removing the inspection plate directly beneath the motor. It is usally a plug in synchronus motor that revolves at a few revs per minute but the plastic cogs in the motors gear box fail and the motor assembly must be replaced. They are fairly inexpensive and obtainable usually from a domestic appliance repair shop.
If you feel confident, disconnect it from the mains power, remove anything in the cavity and turn it upside down if it is a tabletop model, a little more complicated if it is built in!
Remove the inspection plate and disconnect the motor. Remove the motor and go and get a new one. Re fit it and put the microwave back in its position. Plug it back in, with the turntable and plate. Put a cup of water on the plate inside of the oven and heat for 20 seconds to check the plate goes round.
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Replacing the turntable motor.

The motor assembly is fixed to the base of the oven usually with two screws and access i obtained by removing the inspection plate directly beneath the motor. It is usally a plug in synchronus motor that revolves at a few revs per minute but the plastic cogs in the motors gear box fail and the motor assembly must be replaced. They are fairly inexpensive and obtainable usually from a domestic appliance repair shop.
If you feel confident, disconnect it from the mains power, remove anything in the cavity and turn it upside down if it is a tabletop model, a little more complicated if it is built in!
Remove the inspection plate and disconnect the motor. Remove the motor and go and get a new one. Re fit it and put the microwave back in its position. Plug it back in, with the turntable and plate. Put a cup of water on the plate inside of the oven and heat for 20 seconds to check the plate goes round.
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Replacing the turntable motor.

The motor assembly is fixed to the base of the oven usually with two screws and access i obtained by removing the inspection plate directly beneath the motor. It is usally a plug in synchronus motor that revolves at a few revs per minute but the plastic cogs in the motors gear box fail and the motor assembly must be replaced. They are fairly inexpensive and obtainable usually from a domestic appliance repair shop.
If you feel confident, disconnect it from the mains power, remove anything in the cavity and turn it upside down if it is a tabletop model, a little more complicated if it is built in!
Remove the inspection plate and disconnect the motor. Remove the motor and go and get a new one. Re fit it and put the microwave back in its position. Plug it back in, with the turntable and plate. Put a cup of water on the plate inside of the oven and heat for 20 seconds to check the plate goes round.
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Replacing the turntable motor.

The motor assembly is fixed to the base of the oven usually with two screws and access i obtained by removing the inspection plate directly beneath the motor. It is usally a plug in synchronus motor that revolves at a few revs per minute but the plastic cogs in the motors gear box fail and the motor assembly must be replaced. They are fairly inexpensive and obtainable usually from a domestic appliance repair shop.
If you feel confident, disconnect it from the mains power, remove anything in the cavity and turn it upside down if it is a tabletop model, a little more complicated if it is built in!
Remove the inspection plate and disconnect the motor. Remove the motor and go and get a new one. Re fit it and put the microwave back in its position. Plug it back in, with the turntable and plate. Put a cup of water on the plate inside of the oven and heat for 20 seconds to check the plate goes round.
Hope this helps.

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Replacing the turntable motor.

The motor assembly is fixed to the base of the oven usually with two screws and access i obtained by removing the inspection plate directly beneath the motor. It is usally a plug in synchronus motor that revolves at a few revs per minute but the plastic cogs in the motors gear box fail and the motor assembly must be replaced. They are fairly inexpensive and obtainable usually from a domestic appliance repair shop.
If you feel confident, disconnect it from the mains power, remove anything in the cavity and turn it upside down if it is a tabletop model, a little more complicated if it is built in!
Remove the inspection plate and disconnect the motor. Remove the motor and go and get a new one. Re fit it and put the microwave back in its position. Plug it back in, with the turntable and plate. Put a cup of water on the plate inside of the oven and heat for 20 seconds to check the plate goes round.
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Replacing the turntable motor.

The motor assembly is fixed to the base of the oven usually with two screws and access i obtained by removing the inspection plate directly beneath the motor. It is usally a plug in synchronus motor that revolves at a few revs per minute but the plastic cogs in the motors gear box fail and the motor assembly must be replaced. They are fairly inexpensive and obtainable usually from a domestic appliance repair shop.
If you feel confident, disconnect it from the mains power, remove anything in the cavity and turn it upside down if it is a tabletop model, a little more complicated if it is built in!
Remove the inspection plate and disconnect the motor. Remove the motor and go and get a new one. Re fit it and put the microwave back in its position. Plug it back in, with the turntable and plate. Put a cup of water on the plate inside of the oven and heat for 20 seconds to check the plate goes round.
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It might be better to post this in the GE section, but I'll be happy to answer it here, too.

I would suspect a bad magnetron or high-voltage transformer, but it may be the turntable motor or an arcing stirrer.

If you can post back with the model number and a bit more detail on when and how it happens, we may be able to help you better.

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