I have tried all of the above, but still get no pay out. Pressing the button has no effect and when I insert another coin still no payout. Shorting the button contacts does nothing. I have operated the micro switches manually and get the correct response(s) so I know that part of the machine is working properly. I suspect I have a problem in the circuit board. Can you tell me the function of the circular arm with the wipe contacts? Does it operate the micro switches or only determine the amount of pay out? I have adjusted the copper contacts but it makes no difference. The motor causes the contacts to rotate 180 d if I manually move the plastic arm and start it but results in no functions at all. I find no cracks or opens in the circuit paths so I'll have to trouble shoot the electronic components
Thanks for your help and advice.
regards
Game Guy