It is a very sad day indeed. My SG20 MIDI tone module is no more. I was putting the batteries in and got a sudden smell of burning. When I tried to see if it still worked, nothing. Not a thing at all. Big shame.
So I thought I'd open it up to see if there was anything obvious wrong with it, but nothing jumps out at me. Any suggestions as to what to do with it would be gratefully received.