Samsung CM1929 - Service Manual

Questions and Answers

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sandrawilliamsSep 12, 2025
What does error E5 mean on my Samsung CM1929 Microwave Oven?
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  Curtis RothSep 12, 2025
  The 'E5' error code on your Samsung Microwave Oven indicates a Memory IC (EEPROM IC) failure or a MICOM failure. Check the Memory (IC3) and replace if defective. Replace the Ass’y Main P.C.B or MICOM.
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dcooperSep 12, 2025
What to do if my Samsung CM1929 Microwave Oven shows E3 error?
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  Travis KentSep 12, 2025
  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.
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Mike EllisSep 12, 2025
What does error code E41 mean on a Samsung CM1929?
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  Dylan SotoSep 12, 2025
  The E41 error code on your Samsung Microwave Oven indicates a Main Relay (RY1) or Power Relay1 (RY2) failure, loose lead wires of the relay, a Primary or Monitor S/W failure, loose lead wires of the Primary or Monitor S/W, or a H.V.Trans input power sensing circuitry failure. Check the Main Relay (RY1), Power Relay1 (RY2), Primary S/W, and Monitor S/W, and replace if defective. Also, check if lead wires are loosened and connect firmly if loose. Check the circuitry and replace if defective.
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John ChavezSep 9, 2025
What does error code E1 mean on a Samsung Microwave Oven?
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  johnsoncarlosSep 9, 2025
  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.
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David AdamsSep 8, 2025
Why is the turntable motor in my Samsung CM1929 noisy?
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  Dean MyersSep 8, 2025
  Noise from the turntable motor in your Samsung Microwave Oven when it starts may result from the motor itself. Replace the turntable motor.
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William GarciaSep 7, 2025
What does error code E42 mean on my Samsung CM1929?
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  Julian Baker MDSep 7, 2025
  The E42 error code on your Samsung Microwave Oven indicates a failure with the Main Relay (RY5), loose lead wires of the Power relay (RY5), a Primary or Monitor S/W failure, loose lead wires of the Primary or Monitor S/W, a blown fuse (10A) on the neutral area of the Ass’y Noise Filter, or a H.V.Trans input power sensing circuitry failure. Check the Power Relay2, Primary S/W, Monitor S/W, or Fuse and replace if defective. Check if lead wires are loosened and repair as necessary. Check the circuitry.
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Chase ZimmermanAug 23, 2025
What to do if Samsung Microwave Oven timer counts down but there is no heat?
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  Monica WestAug 23, 2025
  If your Samsung Microwave Oven's timer counts down but isn't heating, even though the lamp and fan are 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 such as the H.V.Transformer, H.V. Capacitor, H.V.Diode, H.V.Fuse Magnetron. Adjust the door and latch switches and check the high voltage components according to the component test procedure; replace any defective parts.
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bondrachelSep 6, 2025
What does error E3 mean on a Samsung Microwave Oven?
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  William HansenSep 6, 2025
  The 'E3' error code on your Samsung Microwave Oven indicates overheating inside the cavity, possibly due to no load or little load aging, blocked air ventilation around the exhaust area, or ventilation motor failure and magnetron overheating. Check if the oven was operating without load or with too little load, and plug the power cord in again. If the error persists, check the resistance of the Thermistor sensor and replace it if defective. Also, check for any blocking materials around the air exhaust or ventilation opening. If the ventilation motor is not working and the magnetron is overheating, replace the motor.
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Christopher UnderwoodSep 4, 2025
Samsung CM1929 Microwave Oven is dead, but the fuse is OK, how to fix it?
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  flemingamySep 5, 2025
  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), or a defective Ass’y PCB. Check the fan motor when the thermal cutout is defective.
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Amanda BarkerSep 3, 2025
Why is my Samsung CM1929 Microwave Oven making a loud buzzing noise?
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  Alexander HenrySep 4, 2025
  A loud buzzing noise in your Samsung Microwave Oven can be caused by a loose fan or fan motor, loose screws on the H.V.Transformer, a shorted H.V.Diode, or a loose or missing screw on the Cover-Back. Tighten the screws of the fan motor and H.V.Transformer. Replace the H.V.Diode and tighten the screws of the Cover-Back.