The Aussie Pinball Arcade

Aussie Pinball Forums => Technical Matters => Pinball Repairs / Problems & Assistance => Topic started by: pinfrog on February 26, 2009, 01:48:25 PM

Title: Bally 8 ball problems!
Post by: pinfrog on February 26, 2009, 01:48:25 PM

I have just taken ownership of an 8 ball.Two problems. First  is with the displays, all the displays are strobing/flickering really fast and the second prob is a section of lights on the backbox have suddenly failed to work.Can someone PLEASE HELP diagnose. Cheers Les. !@#

Title: Re: Bally 8 ball problems!
Post by: Strangeways on February 26, 2009, 01:59:20 PM

Interesting one Les. Check the connectors to the CPU board. Is there any corrosion around the bottom section of the board ?

Isolate the displays - Start with just one display connected and move it around each of the players.

GI - Check the connectors on the power board - any "hacks" ?

Title: Re: Bally 8 ball problems!
Post by: The pinballist formally known as Dean Morgan on March 01, 2009, 05:27:05 PM

With Nino on this one, the strobing is most likley a bad connection on J1 on the CPU board. Maybe the pins are corroded (sand them lightly with sandpaper).  I have had this problem before and it was connector related.

The GI could be a connection on the backbox wiring  itself check if any of the wiring that loops from lamp to lamp (steel braid) has come away or is broken in any way.