Underpay
Games affected: all
Underpay is when the machine pays less than the correct amount, and is almost always dirty/misadjusted contacts.
Problems
- only pays a couple credits
- stops paying at same amount when odds are higher
- short pay a couple credits
| Only pays a couple credits | |
| search wipers making poor contact |
if the search wipers are dirty or barely making contact, then the
vibration and current spikes associated with payout can cause the
search wipers to shift slightly and the search relays therefor release.
Pressing the R-button (or waiting on games without the R-button) will
result in another couple pays
clean search wipers and contact plate, and adjust the search index coil |
| dirty replay counter contacts | if the replay counter circuit traces or contacts and wipers are dirty, you lose power through that unit and the game thinks the correct payout level has been reached |
| broken bakelite tab on search index unit or misadjusted search index switches | this one is tricky. if you look at the search index unit, you'll see a stack of switches on it. On many games, this stack is lifted by a small bakelite finger rivetted to the coil plate. if the finger is broken or bent a lot, the switch stack can't flop state and the hold circuits for the search index coil and replay cams index coil don't work. |
| stops paying at same amount when odds are higher | |
| dirty replay counter wipers/traces/contacts |
the design of the replay counter is interesting. Payouts for higher
amounts use circuits for lower payout levels, and when the replay counter
steps up past off the currently hot trace/contact, it will connect to
another circuit which is hot if payout needs to continue, or is not
powered if the correct payout has been reached. If the trace/contact the unit
steps onto is dirty, or the wiper fingers/contact aren't making a good connection,
payout stops. You can sometimes apply pressure against the fingers and payout
works.
clean search wipers and contact plate |
| replay counter traces not getting powered by score disc | if the replay counter traces aren't getting power, then the score disc is not passing it. Clean the score disc contacts/wipers and check for broken wires. |
| short pay a couple credits | |
| replay cams switches dirty | dirty/pitted contacts cause the circuit to not complete intermittently. You can often tell this is the problem if you see/hear a kindof halfhearted attempt to step up the replay register. |
