Star Tech Journal

STAR*TECH Journal
February 1988 (5)
•
Parts That Fail Often:
ZSO's By SGS/Ztal Osc Pkg
Z80's by SGS/Xtal Osc Pkg
By Sam Cross
Godwin Distributing Co.
North Little Rock, Arkansas
CRYS'l7\L OSCILLA'IOR PACKAGE
[X)C,- 20
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Z80'S BY SGS
• KO:, - <\A .i
The crystal oscillator package can have a
high rate of failure in certain ganes by
two manufacturers which come to mind.
Z80A's (2 megahertz) and mostly Z80B's (4
megahertz) by SGS, manufactured in Italy,
have had a much higher than normal failure
rate after years in operation on nany
Bally/Midway MCS-III systems and other
ganes made by Bally/Midway using these
chips.
Steering Wheel
•
s125.00
In particular, this part can fail more
often on later model Williams' pinball
ganes and'Konami video ganes. These two
manufacturers have had more failures of
this piece, no matter what oscillator
frequency, than other board I have worked
on.
"Shifter"
$24.95
CONTROLS INC. Manufacturer and Distributor of Game Controls
1461 F Lunt Ave . • Elk Grove Village , IL 60007
Phone : 11l/1