Archived from groups: rec.games.pinball (
More info?)
There are 4+ Bally MPU replacements already available. Xenon Sounds
Plus and Vocalizers and Centaur Say it Again boards are much harder to
come by. Combine the functionality of the Sounds Plus, Vocalizer and
Squawk N Talk boards; then add dialable reverb to sampled sounds (aka
the Say it Again board) and you'll have a hot item on your hand as it
is used on the most sought after early solid state Bally's.
If you can make a Bally/Stern MPU replacement for sub $100 I'm all for
that too but it isn't a pressing need like the above mentioned item.
shazzam wrote:
> The single weakest link in the Bally SS Inventory is the AS-2518-35
> MPU. Between August of 1978 and April of 1986, Bally produced over
> 250,000 Pins using this MPU Board (Ref: IPD Search on 2518-35 MPU). A
> vast majority of these boards have been destroyed by the battery
> corrosion design flaw. Problem is, the Altecs and "All in ones
> available today are priced @ ~$@200.00 w/ many more features than the
> originals. I think there is a market for a $99 no frills -35
> replacement board that corrects only one issue: Corrosion.... Use the
> same chips and scematic as the original. Sell them with a required
> "CORE DEPOSIT" of an existing -35 board that they are replacing. This
> keeps the IC cost down and provides a hook for existing owners that do
> not want to dispose of there corroded -35 boards.... Keep there proms,
> you get the ICs for the cores...
>
> May do a switch selectable -133/-35 board that converts the Zero
> Crossing for -35 or -133 use... to increase the potential customer
> base...
>
> -17 boards are another story...
>
> Corroded -35 boards go for $50-100 on eBAY regularly b/c people do not
> want to spend $200 on a board for a $500-$1500 pin. The cost ration is
> wrong...
>
> my opinion,
>
> Steve
> EBD, SBM, Embryon, Paragon, Lost World....
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