We got this oven in for repair Its a GE model JE2160SF-03. The name
plate reads 120V 1.65KW (MW). I don't know what the MW stands for
however the 1,65 KW would seem to translate into 13.75A. The line fuse
is 20A. The customer tried to use this with a generator during a
recent power failure. He said that the microwave made some odd noises
as the generator surged a few times and so he disconnected it.

On full power mode the unit draws about 7.0 amps and does not heat the
food. An ohm meter test on the capacitor seems to indicate that it has
a good bleeder and that it does charge. I ran the transformer primary
at 12 volts, (10 percent line voltage), and noted that it puts out
about 260V between chassis and the HV lead. There was a small voltage
present on the filament terminals as well. There are no shorts or
leakage to ground on any components. The diode tests good as well.
With a 10 ohm resistor in series with the diode during full power mode
the voltage drop according to Sam's notes should be between 3 and 4
volts. The reading I got was about .200V.

During brief tests of the unit the Magnetron seems to get ever so
slightly warm so that is the only indication that something is getting
to it. I haven't tried to make any HV measurements. I really don't
have a safe way to do that. I'm ready to condemn the Magnetron however
I would hate to think that I'm overlooking anything. Does it seem
possible that power surges might harm only a Magnetron while at the
same time spare all the delicate electronics? Does anyone have any
further thoughts on this? Thanks, Lenny.