Build Your Own Arcade Controls Forum

Arcade Collecting => Pinball => Topic started by: spag256 on September 26, 2012, 06:48:22 pm

Title: Eight Ball Machine Problem
Post by: spag256 on September 26, 2012, 06:48:22 pm

I recently purchased an original Eight Ball pinball,it has two problems.

The first is the outball kicker won't work. I bought a new coil but when I soldered it in and turned on the power the coil "locked" in the "on" position,started buzzing and got very hot. I disconnected the wires.

The second problem is that all the bulbs behind the backglass won't light,it is not the bulbs.

Any suggestions?

Title: Re: Eight Ball Machine Problem
Post by: ChadTower on September 26, 2012, 07:00:33 pm

Shorted driver transistor to the kicker.  Replace the transistor, and if there is one (can't remember here) replace the predriver.  The problem was not originally the coil though the original coil was probably damaged.

Check the ground string for the those lights for breaks.

Title: Re: Eight Ball Machine Problem
Post by: Dawgz Rule on September 26, 2012, 07:05:30 pm

Here is a link for downloading the schematics and manual.  This should help with troubleshooting.

http://www.ipdb.org/machine.cgi?id=760 (http://www.ipdb.org/machine.cgi?id=760)

Title: Re: Eight Ball Machine Problem
Post by: ed12 on September 26, 2012, 08:53:27 pm

hi
the backbox lights are >gi< general inulmation
chk the power supply connector's,they go bad...
right at the power supply,most common fault in them early em's

there is no pre-driver,for the kicker just a tip102
follow chadtower's advice there

ed