In message , Tim S
writes

If the OP cares to google, there are FAQ's on microwave oven repair - watch
out for the capacitor and everything connected to it - it gets charged to
many kilovolts and will hold it for some time after the oven is switched
off - "some time" being highly variable and generally longer than you might
expect. The charge it holds will kill a man.

The bulbs are hard to source - though I did find one supplier on the web.

ITYF that CPC sell them


--
geoff