Star Tech Journal

January 1991
Williains Pinball
Display Questions
Evan Wessel
Mercury Amusements
Havertown, Pennsylvania
PROBLEM
It seems that when an F-14 Tomcat has a display
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bfdillS*ti at609/66i-1080.
failure, another will follow. I've had to replace
almost all the glasses in 2 different games in the
last year. What is making these glasses fail like
this?
Also, Can I use the old 6 digit display to replace
the 4 digit match/ credit displays in Williams
pins? I've got about 12 on hand and would like
to use them for something.
JUST DO IT!
Don't Let Those Time & Money Saving
Mod's, Fixes & Technical Tips
Gather Dust In Your Service Files ...
FACTORY RESPONSE
Larry DeMar
Williams Electronics
Chicago, Illinois
Mail or fax them to ST AR *TECH Journal & keep
your name ( and your company's) out in front with
the most progressive technicians in the Coin-op
Industry. Share the knowledge!
CAUSE
The fact that you are losing multiple displays in
close proximity is probably a function of their
age. There is nothing we have ever seen that
causes the failure of one to induce the failure of
another.
Just Do It!
STAR,tTECH Journal, PO Box 1065,
18 North Centre Street, Merchantville, NJ 081()<}
Plwne: 609/662-1080 0 Fax: 6()<}/662-0537
As far as using an older 6-digit display for the
credits match (otherwise known as the2-2 split),
this is NOT possible. The 6 and 7 character
displays use a common cathode arrangement,
with only 1 digit at a time being activated. Each
pair of digits on the 2-2 split (hence the name)
has its own set of strobes and segment data.
Complete back volumes from STAR* TECH Joumaf's
REASON
eorly years are still ovcilloble,Vol, 1·.('80). Vo1.2·('81).
Vol.3('82)and V6I.4 ('83). Eqch bc:>Und undet 1 cover.
This was necessary to accommodate our hard-
ware configuration when we went from 6 to 7
digits. It was necessary to do it this way to allow
the system (the drive system) to be downward
compatible for the previous games.
MISSING Back Issue INFb?
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Now You CAN ORDER THEM FOR ALMOST HALF PRICE!
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ONL V $22 EAC:HI
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08109. Phone: 609/662-1080. Fax: f:IJ9/662-0537,