He he sorry needs to be takin in to tech for service could be just a bulb., shouldn't cost too much if you take it to a local small electronics repair shop.
There is mod you can make to get it back, changing out a couple of capaciters I think. I'll see if I can find it for you.
Found it.... There are couple of posts from Mark Burgess that contains the fix.... here's one: https://www.ecoustics.com/cgi-bin/bbs/show.pl?tpc=1&post=1390678#POST1390678