Hi bojan, great that's the one all right. Or maybe not so great. I don't know what a voltage regulator might look like but I'd say given it stopped working after the application of 12v, it doesn't have one.
I'm guessing the processor are those black rectangular items with lots of legs and they're not off-the-shelf? * Edit* OK, saw the link to more and that explained the processor. This is getting in over my head now, I didn't mind the idea of replacing a few simple components but a chip? This would mean it would have to be flashed with some sort of specific firmware or something hey?
cheers
Michael