Leaderboard

Still not here yet! hoping in the next few weeks

For the sound it's worth checking that you're seeing the 15v on the collector of T11, if you haven't already. IC3 only delivers the basic sound bleeps, the main sounds come from IC2. Not sure which one supplies the error sounds? For the Hold button it's possibly one of the associated diodes in the switch matrix unless it's affecting other switches you may not have noticed yet. In that case it could be IC22 or one of the caps C24-28 going short. It's quite easy to fault.

As they say... the end justifies the means.

A quick update, i thought i had got rid of this strange reset issue but alas i had not (well i have now). So running on the golden nudge it cart, 9 times out of ten when you got nudges it would work, however with its own nippy nudger cart it rarely would, normal gameplay fine but as soon as you nudged it would reset. Wiring between the two carts slightly different as it uses different lamp outputs for nudge feature and the coin lockout and one of the meters are swapped. Anyway by total accident i realised it was only when the four lamps in the nudge panel were flashing and you nudged it would reset, take the lamps out and it would be fine, now psu is ok all recapped and new regulator, 5.1v very steady but a 0.4v drop on the 15v (15.2v) when lamps flashing. I was only getting 8.6v across the 9.1v zener but that could well be within tolerance. At this point i cheated a little as the only 9.1v zener i have is a stud mount diode so i put an 8.2v zener in (i do recall Barcrest released some notes on MPU3 about changing the zener on low voltage sites, not that mine is low). It works fine now every time. So maybe it is an iffy zener transistor or resistor on the voltage sense circuit (i dont care now it works)