i have checked:
all door/switch safety latches and continuity checks out;
main fuse has continuity;
1 of 2 thermal cutoff is open (but disconnecting it microwave still does not power on display, light, anything, if this is the problem should disconnecting it turn machine on?)
Capacitor and transformer show proper resistance readings.
Replaced main power board(there is another board in this sharp kb6524ps microwave, but not sure if that would give this symptom?)
History machine stopped heating awhile ago, but all electronics operated. Replaced magnetron and everything was fine for a few weeks. Then while my wife was cooking rice for about 4-5 minutes there was a burning smell from the machine and then all power went off.
This is a factory refurb unit but sharp says they have no technical people who can help me. I am rural and the few appliance repair people in the area either don't service sharp or are afraid to tackle this model as they are unfamiliar with it - so I have been doing the "warrantee" repairs out of my own pocket.
Anybody out there have any help?
all door/switch safety latches and continuity checks out;
main fuse has continuity;
1 of 2 thermal cutoff is open (but disconnecting it microwave still does not power on display, light, anything, if this is the problem should disconnecting it turn machine on?)
Capacitor and transformer show proper resistance readings.
Replaced main power board(there is another board in this sharp kb6524ps microwave, but not sure if that would give this symptom?)
History machine stopped heating awhile ago, but all electronics operated. Replaced magnetron and everything was fine for a few weeks. Then while my wife was cooking rice for about 4-5 minutes there was a burning smell from the machine and then all power went off.
This is a factory refurb unit but sharp says they have no technical people who can help me. I am rural and the few appliance repair people in the area either don't service sharp or are afraid to tackle this model as they are unfamiliar with it - so I have been doing the "warrantee" repairs out of my own pocket.
Anybody out there have any help?