No over oven light tried bulb did not work indicator. Lights on panel work as does on off switch checked voltage at socket none found is there a fuse somewhere?

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,

Check the on/off switch.

Normally switch power off and remove plug from wall socket, undo screws around side and back panel and remove outer cover, then the light socket will be visable so change light bulb and reassemble, CAUTION: high voltage may be present so best left to service person for safety

follow this steps and fix it God bless you

1. Light bulbIf your microwave light bulb is not working, perhaps it has blown. The first step is to replace the bulb and power on the microwave. If this does not correct the issue, the next step is to check the socket and wiring to verify if that is the problem.
   
2. Light bulb socket & main control boardIf your microwave light bulb is not working after the installation of a new bulb, check the light socket as well as the wiring to ensure they are properly operating. If these sources are functioning properly, the next step is to check for a faulty control board as a possible root cause to your microwave light bulb malfunction.
   

Read more: http://www.appliancepartspros.com/repair-help/microwave-repair-help.html#6#ixzz2gPpzp9iL
http://www.appliancepartspros.com

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.

Check out with a multitester whether the control panel switch on the power towards the high voltage transformer NNB disconnect the high voltage transformer for this test. if not the relay on the electronic controlle device is broken and the panel needs replacement. check also the 3 safety switches on the door for proper operation. mind the power it is dangerous.

see this test . God bless youThis microwave oven repair is only for over the range(OTR) models. First, with microwave still installed, gain access to the control board and check for voltage from the fan relay. If you are not getting voltage from the fan relay on the control board, and your display says fan is on, then you need a new control board.
Again, this microwave oven repair is for OTR models. If you know your light bulbs are good and your display is telling you that they should be on, check the light relay on your control board. If no voltage is found at that relay, then replace the control board. Otherwise your problem is in the light socket, wiring, or wire connectors. You can get to all of that by unscrewing 6-8 screws under the unit and taking the bottom panel off.If voltage is present and the wiring that you can see looks good, then you will have to take the unit down and test for voltage at the fan itself. If the voltage is present there, then test the motor itself and/or start capacitor for the motor. The fan motor assembly will slide out of the top of the unit after you take it down and unscrew 2 screws. Below, in the list of component testing, you will see how to test the motor and start capacitor. get the part from
www.repairclinic.com

The part that controls that is goes through your control panel on your microwave. For the lights to come on to start with the door being closed switches have to be working right and when you press start the lights come one. When the microwave is through cooking and you open then close the door then the lights should go out. The logic IC on the control panel board that detects all these events is not being reset correctly. Unless you get a microwave tech to track down the component on the control panel circuit board it is not something that you could do on your own since it takes voltage and signal checks with the proper equipment and then some soldering and desoldering of the defective component(s). Good luck and God bless.

It is the control panel. You can actually just replace the circuit board on the control panel and it should fix this.

on front panel there is alow voltage transformmer the primary side isopen circuit replace