Having a payout issue with a 809-5ZF I picked up about 2 weeks ago.
All pays are correct except for coin 3 payouts, which payout close to the coin 4 amount (usually off by a coin or 2). With 4 coins in, it pays out the correct amount, as does 1,2, and 5 coins in.
I thought maybe it was a multiplier issue, but if I lift the wire to the x4 multiplier, it still over pays to close to the coin 4 pay with 3 coins in.
I've also looked at the reel wiper boards thinking that might be where the problem is and found some sketchy wiring, but from the schematic I'm using, those wires have to do with the hopper agitator on handle pull. (which works fine).
I've gone through the payboard maintenance, spring tension, rubber stop replacement etc.
I can't find the schematic and maybe it's unobtainable. Bally index says its 1321, I've been referencing the schematic for a 5ZX which is a 50 cent machine (mine is a nickle machine), but they're both 809 lightnings.
I've also got 2 wires cut and taped under the payout board, those look to go to the jackpot relay to trip the machine until attendant resets, so I'm assuming they were cut so the machine doesn't trip on a jackpot (mine doesn't).
Sorry for the long winded post, this one really has me stumped. I've got everything else working correctly on this machine, hoping someone can steer me in the right direction.