Finally solved the sound board issue - two broken traces were robbing 2 of the sound lines - all good now.
And got it in from the garage last Monday and a few members managed to get a couple of games in to boot.
Pleased to hear it was a simple fix, Nick. I have to say that this machine was the "eBay steal of the year". No matter how many great games on offer (Big Bang Bar / ATM etc), I can't resist playing Spirit.