Turbo Air TMW-1100E Service Manual page 28

Does the fan motor work when you
shut the door and turn the timer?
YES
Does the oven lamp light?
Does the turntable turn?
YES
If microwave do not
oscillate, check continuity
of filament of magnetron.
Poor continuity
Check the isolation of filament
winding of high voltage
transformer.
Good
NO
Normal reading
should be
approx. 0
NO
Check continuity
Continuity
filament tap (3.3V)
of high voltage.
Continuity
Check continuity
filament tap (3.3V)
of high voltage.
Continuity
Meter with 6V or higher
voltage batteries should
be used to check the normal
direction resistance of
the diode
NO Continuity
26
Replace or repair oven lamp,
turntable motor.
No Continuity
Replace high
Voltage transformer
Continuity in
the reverse
Replace high
direction.
Voltage transformer
Replace magnetron
Replace high voltage
transformer.
Replace magnetron