What to do if my Samsung CM1929 Microwave Oven doesn't operate and returns to plugged in mode?
If your Samsung Microwave Oven does not operate and returns to the plugged-in mode, it is likely due to a defective Ass’y PCB. Replace the PCB main.
What to do if Samsung CM1929 Microwave Oven does not accept key input?
If your Samsung Microwave Oven isn't accepting key inputs (program), it could be because the key input is not in sequence, there's an open or loose connection of the membrane key pad to the Ass’y PCB, a shorted or open membrane panel, or a defective Ass’y PCB. Refer to the operation procedure. Replace the PCB main.
Why is my Samsung Microwave Oven cooking slowly?
If your Samsung Microwave Oven's output is low, and it takes longer to cook food (with the oven lamp and ventilation working), it could be due to a decrease in power source voltage, an open or loose wiring of the magnetron filament circuit, aging of the magnetron, or defective high voltage components such as the H.V. Transformer, H.V. Capacitor, H.V. Diode, H.V. Fuse Magnetron. Consult an electrician to check the power source voltage. Also, check the high voltage components according to the component test procedure and replace if defective.
Why does my Samsung CM1929 Microwave Oven stop in the middle of cooking?
If your Samsung Microwave Oven stops during cooking, this could be due to the operation of the thermal cutout (Magnetron or Cavity) or a fan motor that isn't rotating. Adjust the door and latch switches and replace the fan motor.
What does E42 error mean on a Samsung CM1929 Microwave Oven?
If your Samsung Microwave Oven displays error code E42, it could be due to a Power Relay (RY5) failure, loose lead wires of Power Relay (RY5), a Primary or Monitor S/W failure, loose lead wires of Primary or Monitor S/W, a blown fuse (10A) on the neutral area of the Assy Noise Filter, or a H.V.Trans input power sensing circuit failure. Check the Power Relay2, Primary S/W, Monitor S/W or Fuse and replace if defective. Also, check if lead wires are loosened and repair as necessary. Check the circuitry.
What does E1 error mean on a Samsung CM1929?
If your Samsung Microwave Oven displays 'E1', it could be due to an improper input power frequency or a defective Ass’y Main P.C.B. Check if the power frequency is 50Hz. Replace the Ass’y Main P.C.B or MICOM.
Why is the turntable motor in my Samsung CM1929 noisy?
Noise from the turntable motor in your Samsung Microwave Oven when it starts may result from the motor itself. Replace the turntable motor.
What does error code E1 mean on a Samsung Microwave Oven?
The 'E1' error code on your Samsung Microwave Oven indicates an improper input power frequency or a defective Ass’y Main P.C.B. Check if the power frequency is 50Hz. Replace the Ass’y Main P.C.B or MICOM.
What to do if my Samsung CM1929 has no display and the fuse is blown?
If your Samsung Microwave Oven has no display and isn't working, and the fuse is blown, the cause might be a shorted lead wire harness, a defective primary latch switch, a defective monitor switch, a shorted H.V.Capacitor, or a shorted H.V.Transformer. Check the adjustment of the primary, interlock monitor, power relay, and door sensing switch.
Why Samsung CM1929 does not accept key input?
If your Samsung Microwave Oven does not accept key inputs for programming (CM1929/1629/1329 models), it could be because the key input is not in sequence, there's an open or loose connection of the membrane keypad to the Ass’y PCB, the membrane panel is shorted or open, or the Ass’y PCB is defective. Refer to the operation procedure and replace the PCB main.
General| Microwave power | 1850 W |
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Safety precautions for servicing to avoid possible exposure to microwave energy.
General safety measures and compliance with Federal Performance Standard 21 CFR.
Warnings and procedures for handling high voltage components and capacitors.
Step-by-step guide for replacing magnetron, motor, and lamp components.
Procedure for safely removing and replacing the high voltage transformer.
Procedure for safely replacing the high voltage capacitor.
Checking continuity and resistance of the high voltage transformer.
Continuity checks to diagnose open filament or shorted magnetron.
Method for measuring magnetron output power using a water temperature rise test.
Steps for measuring microwave leakage using a survey meter.
Common electrical issues, causes, and correction steps for the microwave oven.
Table of error codes, their causes, and corresponding correction procedures.
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