AmazonBasics S9N29R Service Manual page 12

TROUBLE 5
No microwave oscillation even though oven lamp and fan motor run (Display
operates properly).
CONDITION CHECK
No microwave Disconnect the
oscillation wire leads from
Relay 1 and
check continuity
of Relay 1.
(Operate the unit)
Check high-voltage
transformer
Check high-voltage
capacitor
Check high-voltage
diode
Check
magnetron
RESULT CAUSE
Defective PCB
Replace PCB
No continuity
assembly
assembly
Continuity
Defective high- Replace high-
Abnormal
voltage voltage
transformer transformer
Normal
Defective high- Replace high-
Abnormal
voltage capacitor voltage capacitor
Normal
Defective high- Replace high-
Abnormal
voltage diode voltage diode
Normal
Defective Replace
Abnormal
magnetron magnetron
TROUBLE 6
Oven does not cook properly when programmed for the set power level (Operates properly
on HIGH).
CONDITION
REMEDY
Output is full when
you set lower
power level
NOTE: • Make sure the wire leads are in the correct positions.
• When removing the wire leads from parts be sure to grasp the connector not the wires.
• When removing the magnetron, be sure to install the magnetron gasket in the correct
position and in good condition.
ATTACHED FILES LIST
1. Exploded View and Spare Parts List
2. Wiring Diagram
11
CHECK RESULT
Defective PCB
Disconnect the
Abnormal
assembly
wire leads from
Relay 1 and check
continuity Relay 1.
(Operate the unit)
CAUSE REMEDY
Replace PCB
assembly