February 20th, 2012, 06:35 PM
February 20th, 2012, 08:23 PM
LINK> Many GE OTR microwave models however have a defect in the microwave distribution system which causes the magnetron tube to overheat
How do I determine what is preventing the Microwave from heating - magnatron, diode, heat sensors?
LINK> Microwave parts how to test capacitors, switches, magnetrons high voltage diodes
How do you discharge the capacitor before working on it?
Use a metal ( not the shiny chrome type ) screw driver with a insulated handle to short across ( touch both at the same time ) the terminals of the high voltage capacitor to discharge it. With the microwave unplugged.
February 22nd, 2012, 07:36 PM
All the resistances seem to check out fine except for the blocking diode connected from the capacitor to the chassis. No resistance measurement at all either way. Could this be the only thing causing the microwave not to heat? Or is there something else that usually goes out before or after the diode?
February 22nd, 2012, 08:50 PM
Are you creating high voltage?
Unless you have an really expensive meter you may not see a reading on the diode....the fact that it does not come up as shorted is the best news you have with ohm testing it.
All the resistances seem to check out fine except for the blocking diode connected from the capacitor to the chassis. No resistance measurement at all either way.
A bad diode normally causes a growling noise and no heating.
Could this be the only thing causing the microwave not to heat?
A diode can damage the mag, a mag can damage the diode, we often change them out together now.
Or is there something else that usually goes out before or after the diode?
February 25th, 2012, 11:43 AM
Jeff, thanks for your help. The microwave is working again.
February 25th, 2012, 10:09 PM
What was the problem?
February 25th, 2012, 10:22 PM
February 25th, 2012, 10:30 PM
Thankx for the update, that should help others
June 10th, 2012, 12:35 PM
Hi I don't know anything at all about microwaves but mine isn't heating if it does it doesn't even get to lukewarm. Can anyone help?
June 10th, 2012, 08:34 PM
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