this is a silly question but have you made sure its not the contacts at the flipper button causing the problem? (i am assuming it has contacts and not optos as the manual does not show optos)
try lifting the play field and pressing the contacts from the inside towards the flipper button (after starting the game or in test mode) if the flipper works every time when you do this then it is the contacts.
Andrew
Both bottom flippers work fine top right and top left are intermittant so flipper buttons are working .
Im confidant that the problem is either Q6 or U2 on the fliptronics board will try and find some time this weekend to sort it out.
Cheers
John
i just thought i would start with the basics.
This pin left before i could check it over.
i would be very suprised if it is a transistor or ic, i would be more inclined to think that it would be a dry solder joint or a bad connection some where.
any way thats just my opinion.
Most of the problems I have had with flippers (intermittent or not) have been due to dry joints (resolder) or end of stroke (EOS - adjustment or new EOS switch). So yeah, start by resoldering the flipper connections.
