Bally : Hi-Fi

Game Parameters
Game Type one-card
Game Number 559
Manufacture Date 1954
Number of Holes 25
Number of Odds Steps 8
Max Payout 300
Max Extra Balls 3
 - chris dade image
 - bg 1

 - cab 1
 - cab 2

 - fly 1

 - int 1
 - int 2
 - int 3
 - int 4
 - int 5
 - int 6
 - int 7
 - int 8

Game Manual
 - manual (pdf) : 12.42MB
 - unoptimized manual (pdf) : 39.85MB

Press Image
 - mp 1

 - pf 1

Service Bulletin
 - sk253a-spring sleeve

 - schematic : 7.76MB

S/I Card Scan
 - siscan 1
 - siscan 2


Never let it be said Bally didn't try new things. Hi-Fi introduced the bump feature, and it was so popular it was used on zero machines afterwards.

The bump feature was just a couple big solenoids that tugged the playfield when you pushed a button. I guess it was a way to give the ball a good nudge off a post without tilting the game, but since the only control you really have over a bingo besides shooting the ball into the playfield is shaking the machine, the bump feature takes away half the entertainment.

one-card games

The game has one main card, usually a 5x5 grid of numbers.

Usually, at least three numbers next to each other on either a horizontal, vertical, or the main 5 number diagonals are required to win.

There were, however, a few variations that occured over the years. The dimensions of the card, 2-in-line winners, and winning on the other diagonal combinations were all features that were used.

Another common feature was corners scoring.

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