If your Gottlieb solid state System 80 machine does not start, you may want
to try the following. Open the backbox and with the power off, unplug
connectors A1-J5 and A1-J6. Turn the machine back on. If the machine comes
to life (flashing lights, etc.) then you have a stuck slam tilt and/or
switch shorting. Turn the machine off and check the slam-tilt on the coin
door and the roll-ball tilt that these switches are clean and normally
closed. Check the coin door switches for shorts. You will have to remove
any coin mechanisms to clearly view the coin switches. Note that the coin
lockout wires may tangle with the coin switches, shorting them out. Check
to see that none of the coin switches are stuck closed. If none of these
are a problem you'll have to look elsewhere for a shorted switch. Once you
correct the short, reconnect A1-J5 and A1-J6 and turn the machine back on
and the machine should come up and be ready for play.
Note that it is normal for Gottlieb solid state machines when first turned
on to do nothing and have blank displays for 7 seconds or so before being
ready to start a game.
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