Ok well after feeling like a knob for having the multimeter on ac I've retested the board and have 5.0v @ the 5v point & 4.9 @ the dmd & only 10.2 @ the 12v point. I've changed the bridge rectifier #3 and have the same readings. I have noticed that the fuse holder f5 looks a bit corroded so ill change that over next. Any other ideas? Where else should I check/test ? Thanks guys