Hi, My much loved Barracora has been working perfectly for two years since Andy the Legend brought it to life. Today I turned it on and all that happened was GI illuminated and it repeatedly played one of the sound effects. I opened up the back and gave all the connectors a wiggle to make sure they were seated properly. When I turned it back on the repeated sound effect had stopped, GI still working and two score displays were on. Bizarrely the flippers, pop bumpers and slingshots were working even through it wouldn't start a game. I've tested the fuses for continuity and a visual check reveals no obvious oddities. What should my next steps be please?