Computer and Electronic Repair image


Centaur Photo And Video Gallery

Well it took a while to complete, but here it is, my very own Bally Centaur pinball machine. Serial number ECE2305, one of only 3700 made. Manufactured circa 1981, it is one of only two pinball machines (Centaur and Centaur II) to feature an echo on the sound; using the often missing "Say it again"  board. These are taken out of the machine and bypassed as the aptly named SAD4096 i.c. has a nasty habit of dying. This i.c. is now as rare as rocking horse doo doo, as any that weren't in the "s-i-a" boards were used up by musicians in their echo effects pedals and amplifiers. I've managed to get my board going using an MN3205 (analogue BBD i.c.) and some ancillary parts, see Repairing the SIA board.

The machine's restoration details are too many to go into but if you've got the time, and money for parts, pinball machines make great projects, especially as you have hours of fun playing them when they're finished. My thanks go out to fellow Centaur owners Grant Levey (Australia) and Bill Girardot (Canada) for their time and help in supplying pictures to complete the artwork .....cheers guys.




In the beginning....




Centaur cabinet


Coin door


Playfield artwork


Rectifier board


Regulator board


Outhole kicker


Solenoid assembly


Squawk and talk board


Playfield underside


Playfield refit


Playfield unlit


Playfield lit


Finished playfield


....At the end.



Say It Again Board

Solenoid operation

Feature mode

"Say it again" operation Solenoid operation Feature mode


More information on the Centaur machine can be found at
Centaur in acton
Pinball 2: The previously repaired pinball that got me hooked
Pinball 3: How I repaired my "Say-it-again" board