GE ZEK957 Series User Manual

– 44 –
Microwave Oven Runs but Inadequate/No Heating
Note: Verify line voltage under full load.
Plug oven in, place test
load in oven, select
high power, turn oven
on, and check primary
volts to high-voltage
transformer (white and
black wires).
120 VAC present?
Check RY2 for 120 VAC
between black wire (to
transformer) and chassis
ground.
120 VAC present?
NO
Perform High-
Voltage
Transformer Test?
Pass test?
Does turntable
motor operate?
Open primary
interlock switch
circuit.
YES
Replace high-voltage
transformer.
Perform High-
Voltage Capacitor
Test.
Pass test?
Replace capacitor.
Perform High-
Voltage Diode
Test.
Pass test?
Replace diode.
Perform
Magnetron Test.
Pass test?
Replace
magnetron.
System checks OK.
Repeat procedure.
NO
NO
YES
NO
Replace PCB.NO
YES
Open black wire to
transformer or open
white wire from
transformer to neutral.
NO
NO
YES
YES
YES
YES

GE ZEK957 Series Specifications

General

Brand	GE
Model	ZEK957 Series
Category	Oven
Language	English