Question about GE XL1800 1100 Watts Microwave Oven
Sort of rare these go unless it started to arc and smoke!! Most probable failures are high voltage diodes, control electronics.
If you are sure that is your problem then
Remove outer panel and short high voltage capacitor with a jumper wire, then disconnect all wires to magnetron and unscrew the nuts from it and pull out. Check the condition of the rf seal at base of magnetron and inspect waveguide to verify no burn marks.
Also sometimes a mica diffuser will smoke and burn right at the waveguide entrance to the oven cavity. Make sure to note where wires go where. If you put the wires in the wrong places you will get a blown fuze or a nice light show
Posted on Oct 21, 2008
Tips for a great answer:
NOTE: Before you test this component, make sure your microwave is unplugged, and that you have discharged the capacitors.
There are two tests to conduct in order to
determine whether or not a magnetron has become defective. If you
receive results other than what are detailed below, you will have to
replace your microwave's magnetron. Each test is described for you here:
TEST 1: Locate your magnetron
and label each of the wires attached to it so that you know which wires
are to be replaced where. Set your ohmmeter to the lowest resistance
scale. Take a resistance measurement between each of the magnetron's
terminals by touching each probe to one terminal each. Reverse the
probes and take a second resistance measurement. Each measurement should
read less than one ohm.
TEST 2: Set your ohmmeter to its
highest resistance scale. Touch one of the meter's probes to a magnetron
terminal. Touch the other probe to the metal magnetron housing. Take
special caution to not touch the two probes together. This could result
in an inaccurate reading. This test should produce a reading of infinity
- indicating an open circuit.
To replace the magnetron
Have a certified and experienced appliance repair technician examine and
replace your magnetron. This task is much too dangerous for the average
layman to perform on his own
Hope this was helpful you.
All the best
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