hi folks ,any advice or opinions on the following problem i have would be appreciated,, whilst playing a game yesterday all of the playfield insert lights went out, game was fine to play on but no clue to where my progress in the game, found that the f22 fuse which is a 8 amp slow blow had blown, tried a new one and that blew straight away, no time lag at all, had a look at the manual and this fuse is something to do with bridge b20 ,do you think this needs replacing ,or is there somewhere else i should be looking at before i call the cavalry, please note that i`m not that good with electronics on these boards, only the basics, many thanks in advance,