24
Samsung Electronics
Troubleshooting
SYMPTOM
CAUSE
CORRECTIONS
Oven lamp goes off
1. Loose lead wire or open lamp
Tighten lamp lead wire or replace with
filament
a new lamp
2. Misadjustment of latch switch
3. Defective latch switch
Microwave output is low;.
1. Decrease in power source voltage.
Consult electrician.
Oven takes longer time
2. Open or loose wiring of magnetron
to cook food.
filament circuit. (Intermittent oscillation)
(No heat while oven lamp
3. Aging of magnetron
and ventilation motor.)
4. Defective high voltage components
Check high voltage component
H.V.Transformer
according to component test procedure
H.V.Capacitor
and replace if defective.
H.V.Diode,H.V.Fuse
Magnetron
Oven does not operate and
Defective Ass'y PCB
Replace AssÕy PCB.
return to plugged-in mode.
Loud buzzing noise can
1. Loose fan and Fan motor
Tighten screws of Fan motor.
be heard.
2. Loose screws on H.V.Transformer
Tighten screws of H.V.Transformer.
3. Shorted H.V.Diode
Replace H.V.Diode.
4. Loose or missing screws on
Tighten screws of Cover-Back
Cover-Back
Drive motor not
1. Open or loose wiring of drive motor.
Check the wire of drive motor
work. (Assy stirrer
2. Defective drive motor.
Replace drive motor.
does not rotate.)
3. Defective assÕy stirrer
Replace assÕy stirrer.
Oven stops operating
1. Operation of thermal cutout
Adjust door and latch switches.
during cooking.
(Magnetron or Cavity)
2. Fan motor does not rotate.
Replace Fan motor.
Sparks
1. Metallic ware or cooking dishes
Inform the customer of proper use.
touching on the oven wall.
2. Ceramic ware trimmed with gold or
Do not use any type of cookware
silver powder also causes sparks.
with metallic trimming.
Uneven cooking
Uneven intensity of microwave due to
Wrap thinner parts of the food with
its characteristics.
aluminum foil.
Use plastic wrap or cover with a lid.
Stir once or twice while cooking
foods such as soup, cocoa, or milk.
Noise from turntable motor
Noise may result from the motor.
Replace turntable motor.
when it starts to operate.
Oven can program but
Defective circuitry of Start function
Check circuitry of Start function
timer does not start.
of Main PCB AssÕy.
of Main PCB AssÕy and replace if
defective.
Loose lead wires
Adjust or repair loose wires.
6-1 Electrical Malfunction(continued)
