Hi all, I need a little help please.  I have an FDeck HPF which went pop at last night's rehearsal. I'd plugged it into the power and a few seconds later I heard a small pop (from the HPF, my amp's volume was down) and then a few wafts of smoke came out of the jack sockets.  I've opened it up and was surprised at just how simple it is inside.  Now I'm far from an electrician, in fact I consider most electronics witchcraft, but can happily solder in new parts if it's simple, which