Samsung ME21F707MJT Service Manual page 32

5. Troubleshooting
Loud buzzing noise can be heard.
Loud buzzing noise
can be heard
Turntable motor does not rotate.
Turntable motor does
not rotate.
Oven stops operation during cooking.
Oven stops operation
during cooking
Sparks.
Sparks
Uneven cooking.
Uneven cooking
Noise from the turntable motor when it starts to operate.
Noise from the
turntable motor when
it starts to operate.
Loose fan and fan motor
Loose screws on H.V.Transformer
Shorted H.V.Diode
Open or loose wiring of
turntable motor.
Defective turntable motor
Open or loose wiring of primary
interlock switch
Operation of thermal cutout
(Magnetron)
Metallic ware or cooking dishes
touching on the oven wall
Ceramic ware trimmed with gold or
silver powder also causes sparks
Uneven intensity of microwave due
to its characteristics
Noise may result from the motor
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Tighten screws of fan motor.
Tighten screws of H.V.Transformer.
Replace H.V.Diode.
Replace turntable motor.
Adjust door and latch switches.
Inform the customer: Do not use any type of
cookware with metallic trimming
Aluminum foil should not be placed in the oven.
Use plastic wrap or cover with a lid.
Stir once or twice while cooking foods such as
soup, cocoa, or milk.
Replace turntable motor.