I need to find a replacement bulb for a Panasonic Microwave NN-GD566M

Sounds like the dial control on the timer board is bad, the only way to repair it is to replace the whole time board. Try a place called encompass parts. they are a distributor for Panasonic.

Here is the free online manual, but I did not see the light bulb change on my first look through: https://www.manualslib.com/manual/192230/Panasonic-Nn-S446ba.html?page=2#manual

There is a YouTube educational video that may help more: https://www.youtube.com/watch?v=sLidbz2LUtg

I hope this helps you out!

Panasonic.com appliance parts.com do agoogle search for panasonic microwave oven parts etc. the internet is your oyster the end result is your pearl

open top cover and replace lamp

Spare parts for the Panasonic NN K358CB microwave oven

link is attached

We recommend you have an authorized service center location replace the light bulb. Authorized service centers can be found in the below link.

www.panasonic.com/repair
Welcome to Panasonic Online Repair

This microwave's replacement countertop light is F60305H00AP. This can be obtained by going to www.panasonic.com/parts.

The instructions for replacing the bulb can be found in the below link.

http://service.us.panasonic.com/OPERMANPDF/NNSD277SR.PDF#page=28

Hello, I also have a Panasonic Microwave ( model NN-S 564 or 574 ?) They are very similar.
I have just removed the outer cover 5 screws ( unplug of course ) and have located the bulb holder which is a white plastic component with two clips holding the globe, pull it out and remove the two spade clips connected to the globe. The globe will come away attached to a black plastic mount. Next........do the run around to find someone who sells it.
Perth has an authorized distributer/repairer in Myaree whose details I got from Panasonic. He may sell them. otherwise I will try a couple of specialist light globe suppliers I know....PROLAMPS in Belmont and one in BALCATTA whose name escapes me but I have been there before...Hope this helps others.

Martin

You can find the instructions for this model here and here.

You should be able to find generic replacement bulbs from local appliance parts stores, home improvement stores, or via a local Panasonic-authorized servicer you can locate here.

Many models use one halogen lamp to illuminate the cooktop and another to illuminate the cavity. You must not touch them with your bare skin as the oils will shorten the bulb life.

We're happy to help and we appreciate your thoughtful rating of our answer.

First, get the bulb part #F612E4W00AP or equal. Next, you should find a few screws around a plate in the unit through which the light shows through. Carefully remove them and the glass lens. When replacing the bulb, be sure it is in securely.