General Electric Microwave Electronics
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Step one: Disconnect the power to the Advantium 120. Unplug unit, trip the breaker, whatever. Your responsibility to make sure the electrical power is removed.
For cabinet mounted units remove four screws from front side flange holding the microwave to cabinet
On th ... Read more e cabinet mounted model access three screws along the top front edge of case behind the display then one screw on each side of display and two hidden screws accessed through the top of the case via access holes. (use a magnetic see driver for these screws)
Work the display panel off and support it until the connectors are removed.
There are three small color coded plugs on the left side to the PC board and five larger colored plugs on the right side. Note plug locations.
Lay the removed control panel upside down on a towel at the corner of the sink so the selector knob is not resting on the counter.
Remove PC plug to the display and remove four screws on the PC board. Shift the PC board to release the tabs. Then remove two screws holding the PC display board. Note two guide pins also align the PC board.
Remove the rubber insulator from the old board and put it at the same location on the new board. There is usually enough stickiness on this insulator to put it back on the new board.
Installation is reverse. Reconnect power. Try it out after completion by boiling water in a microwave safe container. My new display was much brighter than the replaced display. No flashing.
1. Unplug device.
2. Two people to remove from wall/cabinet (remove two, large, top mounting screws and rotate entire microwave down and off the wall mount). Should be some wood spacers between top of device and bottom of cabinet.
3. Remove screws from sheet metal cover ... Read more .
4. Remove one screw holding blowers in place and rotate out of the way, in order to gain access to 2 of 5 screws that hold the magnetron in place.
5. Unplug magnetron and remove the 5 screws.
6. Drop in new magnetron and re-assemble microwave in reverse order (steps 5-3).
7. Two people restore micro to wall/cabinet. Replace wood spacers, re-install two, large mounting screws (finger-tight). Test device. Secure the two large screws.
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The GE Advantium was another story. Replaced the Magnetron, diode, and capacitor. Oven still did not work so I took it to the dump. No more GE!
It wasn’t the diode.
It wasn’t just the fuse.
It was the High Voltage Capacitor (HVC). You know, the very thing they warn you about when opening the microwave. Just remember to discharge it using needle-nose pliers before probing around to find the problem. I also suggest you invest in a multimeter ... Read more so as not to waste hundreds of dollars like I did; that way you can go straight to the real problem instead of replacing symptoms. If you replace the HVC, you will also want to replace the two fuses right in front of it. Also, there is a wiring diagram and a troubleshooting flowchart tucked behind the front console near the top. It is extremely useful!