Thanks guys.
ddstoys we reconnected the plugs pushed the buttons with displays off etc. yesterday, and no-go.
Strangeways, the battery in the Flash is a lithium one, about the size of a ten cent piece, is it cool to remove this (i'm asking cause my brother works on commercial appliances with these and hes wants to be on the safe side). My Gorgar has a new battery holder with AA batts, no probs, but just asking about the lithium battery.
Thanks again to both you guys.