Troubleshooting
6-1 Electrical Malfunction(continued)
SYMPTOM |
| CAUSE | CORRECTIONS |
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Oven lamp and fan motor turn on | 1. | Misadjustment or loose wiring | Adjust door and latch switches. |
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| of primary latch switch |
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| 2. | Defective primary latch switch |
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Oven can program but timer | 1. | Open or loose wiring of secondary | Adjust door and interlock switches. |
does not start. |
| interlock switch |
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| 2. |
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| 3. | Defective secondary interlock S/W |
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Microwave output is low;. | 1. | Decrease in power source voltage. | Consult electrician. |
Oven takes longer time to | 2. | Open or loose wiring of magnetron |
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cook food. |
| filament circuit. (Intermittent oscillation)) |
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| 3. | Aging of magnetron |
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Fan motor turns on when plugged in | Loose wiring of door sensing switch | Check wire of door sensing switch. | |
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Oven does not operate and return | Defective Ass'y PCB | Replace PCB main. | |
to the plugged in mode. |
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Loud buzzing noise can be heard. | 1. | Loose fan and fan motor | Tighten screws of fan motor. |
| 2. | Loose screws on H.V.Transformer | Tighten screws of H.V.Transformer. |
| 3. | Shorted H.V.Diode | Replace H.V.Diode. |
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Turntable motor does not rotate. | 1. | Open or loose wiring of turntable motor. | Check the wire of turntable motor |
| 2. | Defective turntable motor. | Replace turntable motor. |
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Oven stops operation during cooking | 1. | Open or loose wiring of primary | Adjust door and latch switches. |
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| interlock switch |
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| 2. | Operation of thermal cutout(Magnetron) |
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Sparks | 1. | Metallic ware or cooking dishes | Inform the customer. |
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| touching on the oven wall. |
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| 2. | Ceramic ware trimmed with gold or | Do not use any type of cookware with |
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| silver powder also causes sparks. | metallic trimming. |
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Uneven cooking | Uneven intensity of microwave due to | Wrap thinner parts of the food with | |
| its characteristics. | aluminum foil. | |
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| Use plastic wrap or cover with a lid. |
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| Stir once or twice while cooking |
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| foods such as soup, cocoa, or milk. |
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Noise from the turntable motor | Noise may result from the motor. | Replace turntable motor. | |
when it starts to operate. |
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Samsung Electronics |
