Sunbeam MA-6400W2 Service Manual page 22

(TROUBLE 2) Oven seems to be operating but little heat is produced in oven load.
CONDITION
Output is low
NOTE : Simple test of power output-conducted by heating one liter water for one min. if available.
Minimum 8.5°C temperature rise is normal condition.
CHECK
Check the
power source
voltage.
Measure the
output power.
RESULT
Lower than 90% of
rating voltage.
Normal
Abnormal
5-13
CAUSE
Decrease in power
source voltage
with load.
Defective
magnetron.
REMEDY
Suggest customer
contact local
electric power
utility co. or
qualified
electrician.
Replace
magnetron.