Star Tech Journal

Wells Gardner
19K4600 Keystone
TaitoChase H.Q.
Cabinet Upgrade
Frank "The Crank" Seninsky
Alpha-Omega .Amusements & Sales
Edison, New Jersey
Rick Rochetti
Taito America Corporation
Wheeling, Illinois
SYMPTOMS
Several of our 19" Wells Gardner 19K4600 Series
monitors (used in Pac Man and Def ender for ex-
ample). have developed a keystone problem. Keyston-
ing is a lack of squareness to the picture -sometimes
referred to as a warp in the picture.
CABINET CHANGES
We have made several improvements on the Chase
H.Q. cabinet which include: a plywood floor and a new
steering assembly.
SOLUTION
As with many older monitors, this problem is caused
by a defective capacitor. In this case it is C614 (33
mfd/25v), a radial cap that is the culprit. When
looking a C614, it does not look defective but it
probably has internally opened over time. C614 is
located on the main PCB just to the right of where the
Horizontal/Vertical board connects (right side).
NEW SOUND OPTION
Also, due to the many requests from the field, we have
developed a sound chip to either reduce or eliminate
the siren volume without affecting other game
sounds.
With these improvements, we feel Chase H.Q. will
continue to be a strong earner and will remain the top
driving game in both arcade and street locations in
1989!
Steering Wheel
"Shifter"
•24.95