To Next PageTo Next PageWhy Samsung CM1919 Microwave Oven can program but timer does not start?
If your Samsung Microwave Oven can be programmed, but the timer doesn't start, it could be due to defective circuitry in the Start function of the Main P.C.B Ass’y or loose lead wires. Check the circuitry of the Start function of the Main P.C.B Ass’y and replace it if defective. Adjust or repair any loose wires.
What to do if Samsung CM1919 timer counts down but no heat?
If your Samsung Microwave Oven's timer starts counting down but there's no microwave oscillation (no heat, but the oven lamp and fan motor turn on), it could be due to an open or loose connection in the high voltage circuit, especially the magnetron filament circuit, or defective high voltage components like the H.V. Transformer, H.V. Capacitor, H.V. Diode, H.V. Fuse, or Magnetron. Adjust the door and latch switches. Check the high voltage components according to the component test procedure and replace them if defective.
Why Samsung CM1919 Microwave Oven 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.
Why Samsung Microwave Oven stirrer does not rotate?
If the drive motor in your Samsung Microwave Oven isn't working (the Ass’y stirrer doesn't rotate), it could be due to an open or loose wiring of the turntable motor, a defective turntable motor, or a defective ass’y stirrer. Check the wire of the drive motor. Replace the drive motor or the ass’y stirrer.
What to do if my Samsung CM1919 shows E3 error?
If your Samsung Microwave Oven displays error code E3, it could be due to overheating inside the cavity because there's no load or too little load. Try plugging the power cord in again. Also, check for any blockages around the air exhaust area or ventilation openings. If the error persists, check the resistance of the Thermistor sensor and replace it if defective. The ventilation motor might be failing and causing the magnetron to overheat; replace the motor if necessary.
Why is my Samsung Microwave Oven taking longer to cook food?
If your Samsung Microwave Oven is not heating food properly, and the cooking time is longer than usual, it could be due to several reasons. The power source voltage might be decreased. Check for open or loose wiring in the magnetron filament circuit. The magnetron itself might be aging, or there could be defective high voltage components such as the H.V. Transformer, H.V. Capacitor, H.V. Diode, H.V. Fuse, or the Magnetron. Consult an electrician and check the high voltage components; replace them if defective.
Why is my Samsung CM1919 making a loud buzzing noise?
If your Samsung Microwave Oven is making a loud buzzing noise, it could be due to several factors. Check for loose components such as the fan and fan motor, or loose screws on the H.V. Transformer. A shorted H.V. Diode or loose/missing screws on the Cover-Back could also be the cause. Tighten the screws of the fan motor and H.V. Transformer. Replace the H.V. Diode and tighten the screws on the Cover-Back.
Why does my Samsung CM1919 stop in the middle of cooking?
If your Samsung Microwave Oven stops operating during cooking, it might be due to the activation of the thermal cutout (either on the Magnetron or Cavity) or because the fan motor is not rotating. Adjust the door and latch switches. Replace the fan motor if needed.
Why is my Samsung CM1919 Microwave Oven completely dead?
If your Samsung Microwave Oven is completely dead, with no display or operation, even though the fuse is okay, it could be due to an open or loose lead wire harness, an open thermal cutout (Magnetron, cavity), an open low voltage transformer, or a defective Ass’y PCB. Check the fan motor when the thermal cutout is defective. Check Ass’y PCB when L.V.T is defective.
Why is my Samsung CM1919 sparking?
If your Samsung Microwave Oven is sparking, it is likely due to metallic ware or cooking dishes touching the oven wall, or ceramic ware trimmed with gold or silver powder. Ensure you are using proper cookware and avoid any items with metallic trimming.
General| Microwave power | 1850 W |
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Essential safety guidelines to prevent microwave radiation exposure during servicing.
Detailed safety points for handling microwave ovens during repair and general operation.
Specific warnings and procedures for dealing with high voltage components in microwave ovens.
Procedures for removing and replacing the magnetron and high voltage transformer.
Steps for removing, replacing, and testing door assembly components and the door handle.
Guidance on checking diodes, relays, and adjusting interlock switches for proper operation.
Detailed steps for measuring and verifying microwave energy leakage levels.
Lists common electrical symptoms, their causes, and recommended corrections for microwave ovens.
Explains error codes displayed by the microwave and provides corresponding correction measures.
