Finally got around to " fix" the pin. What happened was after spending six weeks in the US and having house sitters in the house arrived home and no longer would the game start. What I assumed has happened, the sitter had for some reason turned the tournament switch  inside the front door to the off position therefore it was no longer on free play. Flicked switch to on, put on free play and game is now "fixed". Side note - realised the playfield was filthy so spent half an hour cleaning the p/f and told them the importance of keeping the p/f clean. Things you do for friends.