Replaced the bottom switch behind panel because microwave was not heating food, heating good now but now the bottom light bulbs not working, bulbs not burnt out

May 24, 2017 - I regularly repair these microwave controllers and details are here.

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- William E. Miller, AS-EET
[email protected]
http://www.microwavecontrol.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

Did you replace bulb yourself if so it may look a good bulb with filament complete but if you have touched the glass part of bulb with your fingers it can knacker the bulb.
Also the switch membrane panel traces the circuit from both the switch membrane and the lighting circuit to the power circuit board. So, I know that both the lights and the switch membrane have a common terminus on the power circuit board. Since the circuits from both sources lead to a common point,

Hi,

Behind the top grill above the door is an access panel to change the light bulb. If the bulb is good but light still don't work, its possible the door switch is bad, but normally if the switch is bad the turn table won't work either. Most likely just a bad bulb part number you would seek is WB36X10003 this is not cheap for a bulb, you maybe able to get a replacement from a local lighting center near you. its a 40 watt, 130V bulb

Good Luck

I’m happy to help further over the phone at https://www.6ya.com/expert/gere_bf68e6055dd61249

follow this steps and use the VOM for fix it. God bless you

Light Bulb

If the microwave light bulb is not working it is usually located behind the upper grille and behind an access panel, and above the lower panel. On counter top units you will need to remove the outer cover to get to the bulb. If that doesn't solve the problem check the on-off switch, and control board

Main Control Board

If the microwave light bulb is not working check the light bulbs, sockets and wiring. If they are good the main control board might be defective.

Light Bulb Socket

If the microwave light bulb is not working and a new light bulb doesn't solve the problem, the light bulb socket might be burned out and need to be replaced.

follow the steps and fix it. God bless you

ight Bulb

If the microwave light bulb is not working it is usually located behind the upper grille and behind an access panel, and above the lower panel. On counter top units you will need to remove the outer cover to get to the bulb. If that doesn't solve the problem check the on-off switch, and control board

Main Control Board

If the microwave light bulb is not working check the light bulbs, sockets and wiring. If they are good the main control board might be defective.

Light Bulb Socket

If the microwave light bulb is not working and a new light bulb doesn't solve the problem, the light bulb socket might be burned out and need to be replaced.

Make sure that the program controller is working if not check power - step down supply, the pads are responding- if not faulty pads- or the door switches, if the switch contact are not good then it will not trigger the processor to switch on the waveguides. If the lights or fan work without any display or action of program being triggered to start then it can be a possible fault on the main board or the processor. Sometimes insect secretion can short the board and display panel and so the processor can work in such an erratic manner. If so clean, solder and reset the board. Now identify the parts by clicking this link: http://www.espares.co.uk/advice/microwave/a/5/141/identifying-microwave-parts.html

If there is no heating please do not switch on unless you have confirmed the fault. It is possible that the Magnetron is faulty, the temperature cut off is faulty or the main capacitor is short. It is also quite possible that insect can get into the oven and create soft spots. When you switch on these will create a short and make the voltage jump and in the long run damage the magnetron. Check this link to know how a microwave works:

http://www.espares.co.uk/advice/microwave/a/5/1443/how-a-microwave-oven-works.html

So Remove cover after disconnecting , check for dirt/moisture in the cabin, if so wipe clean and dry, check the magnetron and area clean and use an jet air to clean off. Check the wave guide covers, if food had deposited
then it must be checked or replaced. See link: http://www.espares.co.uk/advice/microwave/a/5/1146/how-to-replace-a-microwave-guide-cover.html

Now keeping clear of the microwave, switch on; use a cup of water inside to test.
If you notice any sparks shut off as the magnetron or the main HT capacitor can be faulty. replace with same type.
If there is heating without any issues, you can use the microwave safely

I would strongly consider replacing the microwave oven, prices have dropped considerably. The problem you are describing is in the keypad controller board.

sounds like the magnetron has failed on this unit...it is located in side behind the control panel touch pad and if replaced usually requires disassembly of the outer shell of microwave... it is a common problem with microwaves and can be fixed just requires taking apart unit to do it...good luck to you

The light inside the micro wave needs to be replaced most have a door on the back side that yo can remove the screw and unscrew the bulb and take to a applince shop and purchance a new one to replace.

First of all, you must be sure you are using a microwave safe container. If it is not marked as such, it is not.

Try heating a cup of water in a clear glass container. If it still does not work right, your stirrer may be bad.

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

There should also be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which 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.

LIGHT BULB

I have a diagram at my site which helps you find & replace many GE cooktop and cavity light bulbs. It's at http://207.234.249.73/mwd/ge_lamp_replacement.jpg

If there's no obvious removable cover over the bulb (most often on the rear or side) and the owner's manual doesn't address it, then disassembly will be required.

Bulbs can be had in most grocery stores, hardware stores, home improvement centers, and big box or department stores.

Many models use halogen lamps. You must not touch the new one with your bare skin, as the oils will shorten the bulb life.

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