Problem with Zaccaria Ski Jump - no solenoid action (they're mostly Williams parts apparently)

[Richard Hodgson]

Hi, I've owned Ski Jump for a couple of years and this is the first serious problem I've had; it happened mid game and it's almost as if the tilt mechanism, or part of it, tripped as the only solenoid that works now is the one to expel the ball from the single hole at the top of the game. For the previous couple of games it seemed hesitant to kick the drained ball back into play. I've done the obvious fuse checks etc and I have the schematics and can usually fix faults, but any pointers would be very welcome. Cheers!

 

[highjon]

youll need to check for voltages at your coils for a start...
I dont know much abour Zacs, is the ski jump an EM..?

 

[BigIan]

Ski jump was made in both em and solid state

 

[Richard Hodgson]

This one's EM except that there's a very naff electronic sound card, I've checked for voltages on some solenoids - nothing assuming it's AC coils which is what I've measured for.

 

[astyy]

nothing assuming it's AC coils which is what I've measured for.

Mostly running at 24V AC apart from what is rectified at bottom right of schematic - row 21 down, this shows a 10A fuse leading to the jet bumper relays.

If a mech is working at top of playfield then perhaps the common feed is broken somewhere below that daisy chaining to the lower mechs.

 

[Zaccaria Keith]

If you aren't seeing 24V AC anywhere then I would suggest going back to the source and checking between the yellow wire on the transformer and the black wire on the output side of the 15A main 24V fuse. If it is OK there then you can stay on the yellow and work your way along the black wires as far as the reset relay. Then leave the meter on the black wire at the fuse and move the other meter lead along the yellow wires to check that the ground side (yellow) wires are intact all the way round. Hopefully you will find where you are losing power or whether it is getting all the way to the reset relay OK in which case you need to look for a reset or game over fault.