JVM1320BB01 General Electric Microwave - Instructions

Had to take unit off wall and disassemble the main casing.then disconnected the wires from the magnetron.took the mounting nuts off but wasn't able to remove the magnetron until I loosened the transformer out of the way .Then it came out easy.Installed the magnetron ,tightened the nuts,installed the transformer back in, connected the the wires back on and installed the casing on ,screwed the screws and got help to install the unit to the wall again.....Tested the unit before putting back on the wall to make sure it heated....The parts were exac same type and wasn't too hard to do...

1. remove microwave from wall
2. remove cover (many screws)
3. remove nuts holding magnetron in place (4)
4. remove magnetron (this is a pain due to the plastic molding used to direct cooling air through the magnetron
5. get new magnetron in place (this was even more fun to find the right angles to tilt to get the magnetron to fit
6. re-tighten the 4 nuts on the magentron
7. put the cover back on
8. put the unit back on the wall.

bonus repair: the display flickered while the magnetron was on (cooking ) prior to the magnetron dying. found a ribbon cable on the control board to the display with an aluminum foil shield that had peeled off (adhesive failure). re-installing the aluminum shield with packaging tape, and the display no longer flickers

Over the range microwave. Replaced magnetron. Completely disassemble the case top and bottom.
Remove screws from bottom of HV transformer. Magnetron will not clear without this removal.

Remove nuts with socket from top of Magnetron. Remove thermo unit from old magnetron and attach it to new. Replace and bolt down Mag. Replace and screw in HV transformer. Make sure all wires are reconnected.

Put it back up on the wall. Took about three hours from taking it down from wall and putting it back up.

Upon taking the faceplate off (unplugged power source first) I found one of the wires going to the THERMO SW-TCO SENSE TEMP was completely burned away. I cut back the wire and spliced a new section with heat shrink connectors and I replaced the THERMO SW-TCO SENSE TEMP. I plugged the power back in and it works great.

used the part I requested and a few extra bolts...job well done!

Had to take the MW off the wall, remove the cover, and find the magnetron. Issue was the HV-capacitor. Had to remove the diode and capacitor to discharge the capacitor safely. Crackle-Bang! Then put it back before toying with the HV-transformer in order to get the magnetron out. Took a little under two hours to get it back on the wall and a lot of cajones when monkeying around the chassis removing the capacitor. Not a job for most everyone as this was a potentially high-shock repair due to the voltage and micro-farads held in that capacitor. Hardest part was getting the magnetron to drop out past the HV-transformer. Also, the thermostat had to be removed from the magnetron and re attached to the new one. Fiddly delicate job, not for the clumsy or faint of heart.

Found blowup drawings inside unit, which helped identify what I had to remove. Had neighbor assist in lifting unit from wall mount, unit slides easily from rails once top bolts are removed. Pay attention to where all the screws go as you remove them, some inside assemblies will have to be removed or loosened. A good guideline to go by is all black screws hold internal assemblies, the bronze screws go in the back side and the chrome screws go on top, sides, and front of the unit. I was able to lift unit back on rails without any assistance.