There is dust buildup behind the control panel due to the openings in the vent trim. I'm worried the dust may eventually cause a short, etc. in the electronics. What is the best way to clean this ar

It sounds like there may be some corrosion or rust buildup in the oven. This can happen over time due to exposure to high heat and moisture. It's important to clean your oven regularly to prevent this buildup. You should also use an oven cleaner specifically designed for this purpose. If the rust has caused damage to the metal, it may be best to call a professional to fix it. It could also be caused by overheating or thermal expansion. It's also important to make sure that your oven is properly vented and that the venting system is clear, as this can contribute to rust and corrosion.

Need to check connections on the pigtail the 220 harness in back of the stove. Check breaker also

Per GE Service bulletin # RA 03-01:

Serial Numbers affected: TZ, VZ, ZZ, AA, DA

Door will not open after self clean cycle due to motorized latch motor stuck in closed position or grinding noise during motorized lock operation.
Both issues are caused by interference of the inner vent trim slot with the latch arm as it travels to the closed position.

Correction:
Replace both the lock motor (WB14T10008) and inner vent trim (WB07T10179).
Failure to replace the inner vent trim will not correct the problem long term, and subsequent lock motor failures will occur.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/jeffrey_634abadf963e31e5

F9 is a problem with the oven door lock circuit. If the door is locked, it's probably a bad switch that tells the oven it's locked. If the door isn't locked, it's probably a problem with the lock mechanism.

A common problem on many built-in GE ovens (you don't say if yours is built-in or free standing...) is air circulation in the control panel. The fan that keeps the panel cool either stops working or gets clogged with dirt/dust and can't move any air. This causes the panel to overheat and can cause all kinds of odd problems and error codes. If you have a built-in, check to make sure the fan is working and the mesh screen behind it is clean.

Open the lower oven door and remove the 2 screws on the left and right trim pieces. Be careful not to drop the trim pieces and bend them. Locate and remove the screws on each side of the control panel and push up on the panel gently to get it off the hangers. Behind the control panel is an over heat fuse that has popped. It plugs into a harness on the back side of the panel. This trips/breaks it's connection from either the oven over heating the cleaning cycle or just from age.? Once fuse is replaced you're good to go. Hope this helps.

Your magnetron is overheating, and its attached thermostat is doing its job to protect the magnetron by shutting off the power to the oven until it cools back down to a safe temperature.

An overheating magnetron can be due to:

• operating oven without cover(s) in place
• wrong magnetron installed in oven
• an old or otherwise failing magnetron
• cracked magnetron magnet
• improper power line voltage (should be 110-125VAC)
• foods low in moisture (popcorn & bacon, e.g. - add 1/2 cup of water in rear oven when cooking such foods)
• failed or inoperable cooling fan or hood vent exhaust fan
• deteriorating foam weatherstripping seals in air ducts or on outside cover
• blocked air vents (dust, animal nest debris, insufficient free air space behind & around oven, etc.)
• clogged or greasy charcoal filter or grease filter
• blocked duct in hood vent exhaust

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, and it is very helpful when troubleshooting, testing, and locating components.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Accessing some parts may require you to pull the oven from the wall and remove the cover.

If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.

You can download GE owner's manuals and installation instructions here.

You can find helpful exploded view diagrams and order parts by entering your full model number here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Found this post on another fixya-type site: below is the link..
Here's a repeat of Kai's instructions so you don't have to scroll down. I just replaced mine and it was a snap. Just a few Phillips screws and a few tugs. No need to pull the unit completely out as you can access the bulb after it's about half way. No need to disconnect any wiring harness except pulling the bulb out of its socket. I used the 10w (G4 12V) replacement bulb from Home Depot at $6. The light is a bit brighter but there've been no problems with fuses.

1) Turn off power to the unit
2) Open the lower oven door
3) Remove the side trim screws and pull the trims down and out.
4) Remove 2 screws on the sides of the control panel.
5) Open the Microwave door. Remove the 3 screws on the Air Vent Plastic Cover on top of the microwave. You can then remove the Air Vent Cover by pushing the control panel up and pull out slightly at the bottom.
6) Remove the 4 screws on the Air Vent Plastic Cover on top of the lower oven and remove the Air Vent Cover. (You may have to remove the left under side bracket of the Microwave door temporarily just for the Air Vent Cover to clear the screw of the bracket. Re-secure the side bracket of the Microwave door panel as the front panel may fall)
7) Remove the 2 screws which held the Microwave unit in place behind the Air Vent Cover on step 6.
8) Wiggle the Microwave unit out about half way to expose the light bulb unit on top center
9) Wiring to the Control Panel will prevent you from pulling the Microwave unit out any further. And you don't want to do that as the unit may fall. Space is cramped, but working carefully with pliers you should be able to release the springs which held down the light bulb unit and change the bulb.
http://www.fixed4free.com/answers.php?id=51232

This worked like a charm ... actually it's easier than you might think. Just a few screws and a few tugs. Give it a shot.. I found a 10W (G4 style ... you'll see the difference when you get to the store) replacement bulb at Home Depot for $6:

1) Turn off power to the unit
2) Open the lower oven door
3) Remove the side trim screws and pull the trims down and out.
4) Remove 2 screws on the sides of the control panel.
5) Open the Microwave door. Remove the 3 screws on the Air Vent Plastic Cover on top of the microwave. You can then remove the Air Vent Cover by pushing the control panel up and pull out slightly at the bottom.
6) Remove the 4 screws on the Air Vent Plastic Cover on top of the lower oven and remove the Air Vent Cover. (You may have to remove the left under side bracket of the Microwave door temporarily just for the Air Vent Cover to clear the screw of the bracket. Re-secure the side bracket of the Microwave door panel as the front panel may fall)
7) Remove the 2 screws which held the Microwave unit in place behind the Air Vent Cover on step 6.
8) Wiggle the Microwave unit out about half way to expose the light bulb unit on top center
9) Wiring to the Control Panel will prevent you from pulling the Microwave unit out any further. And you don't want to do that as the unit may fall. Space is cramped, but working carefully with your fingers or pliers you should be able to release the springs which held down the light bulb unit and change the bulb.

I removed the side trim panels, then the control panel. the wiring diagram was behind the control panel.

Here is a simpler method from the same website mentioned in solution #1:
1) Turn off power to the unit
2) Open the lower oven door
3) Remove the side trim screws and pull the trims down and out.
4) Remove 2 screws on the sides of the control panel.
5) Open the Microwave door. Remove the 3 screws on the Air Vent Plastic Cover on top of the microwave. You can then remove the Air Vent Cover by pushing the control panel up and pull out slightly at the bottom.
6) Remove the 4 screws on the Air Vent Plastic Cover on top of the lower oven and remove the Air Vent Cover. (You may have to remove the left under side bracket of the Microwave door temporarily just for the Air Vent Cover to clear the screw of the bracket. Re-secure the side bracket of the Microwave door panel as the front panel may fall)
7) Remove the 2 screws which held the Microwave unit in place behind the Air Vent Cover on step 6.
8) Wiggle the Microwave unit out about half way to expose the light bulb unit on top center
9) Wiring to the Control Panel will prevent you from pulling the Microwave unit out any further. And you don't want to do that as the unit may fall. Space is cramped, but working carefully with pliers you should be able to release the springs which held down the light bulb unit and change the bulb.

By the way, the bulb is Osram 64405S. It's available online for about $2.00 plus shipping.
See more info. at: http://www.howtomendit.com/answers.php?id=51232