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MEMBER
Volume 3/No. 6
ffintch 15, 1977
staff
Publisher and Editor:
Ralph C. Lally II
Managing Editor:
RichardS. Dietrich
International Editor:
David Snook,
Editor, Coin Slot
Technical Editor:
Robin Minnear
Correspondents :
Roger C. Sharpe
DickWelu
Mary Claire Blakeman
J .W . Sedlak
Randy Fromm
Circulation Manager:
Carolyn Desmond
Art Direction :
Meyer Alewitz
Don Randon
Production :
Earl Dupre
Carol Lally
Vickie Lofton
Typography :
Skybird Typography
Advertising Representatives :
Ralph C. Lally II
Carolyn Desmond
European Representative :
Esmay Leslie
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Coin Industry PLAY METER, March 15,
1977. Volume 3, Number 6. Copyright
1977 by Skybird Publishing Company .
Full editions of Coin Industry Play Mete1
are published monthly, the first Friday of
each month . The Update news edition is
published monthly, the third Friday of
each month. Publishing offices : 4136
Washington Ave. , P.O . Box 24170, New
Orleans, La . 70184. Tel. : 504 / 827-0320.
Subscription rates: U .S. and Canada -
$25; Europe and Japan - $45; else-
where - $50. One order multiple sub-
scriptions : 2-9, $20 each ; 10-24, $17
each : 25 or more. $15 each. Advertising
rates available on request. No part of this
magazine may be reproduced without
express permission . The editors are not
responsible for unsolicited maunscripts .
Application to mail at second class
postage rates is pending at New Orleans,
La. Postmaster: Send form 3579 to Play
Meter, P.O. Box 24170, New Orleans,
La. 70184 .
One of the most important factors
in the repair field is fault diagnosis.
This holds true for all types of
equipment. The competent ser-
viceman can go right to the trouble
spot and locate the problem. This
enables him to make quick and
accurate repairs without wasting
precious time examining areas that
are functioning properly. Remem-
ber, accurate knowledge = accu-
rate repair . With that in mind, let's
examine some common video game
faults and their outward manifesta-
tions. We'll begin with:
The Power Supply
All T2L circuits require a precisely
regulated 5-volt power supply. In
Calendar
some of the early video games, this
supply was taken from the monitor
itself but, as the video game has
grown in complexity, so has the
computer board's appetite for pow-
er.
Exidy's Death Race, for
example, draws around 8 amps of 5
volts D.C.
Because of the high
current demand in today's games,
good power supply/P.C.B . Inter-
face is critical. Electrical contact
between connector and board must
be absolute. A dirty edge connector
can produce a small resistance
between the supply and the board .
As little as one-tenth of an ohm can
produce a voltage drop across the
connector of one-half volt or more.
July 17-19
Music Operators of Texas, annual
convention . St. Anthony's Hotel,
San Antonio, Texas.
Section)
July 22-23
Montana Coin Machine Operators
Association, annual convention .
Outlaw Inn, Kalispell, Montana.
Apri115-16
Ohio Music and Amusement Asso-
ciation, annual convention . Carou-
sel Inn, Columbus, Ohio.
September 16-18
Florida Amusement-Merchandising
Association, annual convention .
Deauville Hotel, Miami Beach,
Florida .
May12-15
Music & Amusement Association
(NYC), convention and trade show.
Stevensville Country Club, Swan
Lake, New York .
September 22-24
West Virginia Music and Vending
Association, annual convention.
Heart 0' Town Motor Hotel,
Charleston , West Virginia.
May20-22
Music Operators of Minnesota,
convention and trade show. Holiday
Inn-Downtown, Minneapolis, Minn .
September 23-25
North Carolina Coin Operators
Association, annual meeting. Radis-
son Hotel, Charlotte, N.C.
June 10-12
Colorado Coin Industries, annual
meeting . Holiday Inn, Glenwood
Springs, Colorado.
September 29-0ctober 1
Music Operators of Virginia , annual
convention . Hyatt House, Richomd,
Virginia .
April14-25
Milan Fair (Automatics
Milan, Italy.
June 16-18
October 28-30
Illinois Coin Machine Operators
Association , annual convention .
Hospitality Motor Inn, Earth City
(St. Louis) , Missouri .
Amusement Music Operators Asso-
ciation , annual convention and
trade show. Conrad Hilton Hotel,
Chicago, Illinois.
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