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Repairing Sansung Microwave version CM 1029

I have Sansung Microwave version CM 1029, the problem is that it turns on normal and function normaly but it doesn't heat so i need your help to repair it by myself, cuz i'm a technician, thnx

Posted by tony helou on

  • tony helou Mar 19, 2007

    i just want to know how to test if it working or not,



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  • 38 Answers

First check voltage to hv transformer if volts probably loose contacts on magnetron ,cap ,diode if still change magnetron

Posted on Mar 18, 2007


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GE cafe convection microwave 9CEB1590SS only heats up with convection heating element.

Can be part of the power supply or the controller board. Best to take the unit in for service. You would need the spare parts to try, the service manual, and the proper voltever to make the necessary verifications.

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There are large transformers that supply the high voltage needed for the microwave to work. They are normally what goes when they stop working. You need a high voltage meter to check them. A tech. that is equipped for microwave oven repair may be your best bet.

Jan 22, 2014 | Microwave Ovens

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My microwave turns on like normal and everything seems to be functioning properly but it will not heat up anything. Is this repairable?

Yes it is repairable! there are three parts that will cause this, the magnetron "common problem" or the the high voltage capacitor or diode. Depending on the part failure will determine the cost, if the magnetron has gone that will approach the price of a new microwave oven.

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Is there a fuse in the system? the light and count down function but no heating.

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Nov 04, 2010 | Sharp R-520LK Microwave Oven

1 Answer

Everything is working perfectly but it's not heating anything

this normaly just happens it just stops heating its most likley to be the magnatron thats the part that heats the food up,,,it just gives up the gost,,,normaly without warning too, there are fuses inside this unit but there not normal sizes and not normal voltages,,,also inside your microwave is a big capasitor it holds 000,and 000s of volts if you do go inside it and tuch this cap, it could or would most likley kill you!
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Aug 07, 2010 | Microwave Ovens

1 Answer

Microwave will not heat. Can't pop popcorn or even fry a piece of bologna jeb1860dmvv Microwave will light up turn table turns as if it on but there is no heat.All functions seem normal.

Sounds like the magnetron has failed. There are some high voltage circuits that feed the magnetron and you can potentially get hurt if you don't know what you are doing. Would recommend you have it serviced by a professional if you want it fixed, otherwise look for a new one since the cost of repair can come close to the price of a new microwave oven.

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1 Answer

Kenmore model 911.4942993 microwave does not defrost or heat. All keyboard functions appear to be normal. Are there onboard diagnostics for this model? This unit is part of a built-in oven with microwave,...

This was my first microwave oven repair, and I feared the worst - big $$$'s, parts no longer available, etc. But after I pulled the unit forward and found the schematic diagram, it turned out to be a defective microswitch in the secondary door latch circuit.
Even in retirement, my degrees in electronics and computer science occasionally save me some $$$'s.

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