STAR*TECH Journal
.
September 1987 (3]
Nintendo PLAYCHOICE 10
Top Monitor
Williams HIGH SPEED Flipper
Update
By Sam Cross
By Todd Erickson
Godwin Distributing Co.
North Little Rock, Arkansas
It seems that for some reason the upper
rronitor on a PLAYQiOICE 10 loses
horizontal sync after several rronths on
location. I have encountered this problem
three tirres I1Tu7self and another routeman
said this has happened to him on six
occasions.
Whether it's in the board or the rronitor
is not important - what remedies the
problem is adjusting the horizontal hold
control on the upper rronitor for a stable
picture. This control is between the
flyback and the picture tube on the PC
board - it is not grouped with the other
controls. There is another control called
"sub brite" that's in the near center of
the board, but the horizontal hold control
- is between the flyback and the CRT; you
- could probably use a flashlight and rrost
likely a pocket screwdriver for this one.
Sega TURBO-MINI Power
Supply
By Sam Cross
Godwin Distributing Co.
North Little Rock, Arkansas
PROBLEM: Low voltage output from the
ETU-5Jl00 switching Supply.
Sunmit Anusements
St. Paul, Minnesota
HIGH SPEED has been in service long enough
now that all of them need an update.
Williams has had their plastic
link/plunger asserrbly out for sorre time.
They last rruch longer than the fiber link
did. Part# Bl0655 R & L.
The E.o.s. IIUst also be replaced. The
Williams F-14 cap (5045-12098-00) must
also be added. The sleeve should also be
replaced as general maintenace every
10,000 plays.
The rrost irrp)rtant item is the flipper
coil. The lower srould be replaced with
red label (FL 11630) and the upper with
green label (FL 11722) flipper coils.
The reason for this coil is as follows:
1.
2.
3.
4.
5.
6.
Runs cooler
Ea, last 5+ times longer
Keeps its power longer
Faster action
Lower ball tirre
Coils last longer.
'1.hese coils are the rrost important
irrprovenent to the pin game since auto%.
I feel the garre soould earn at least
$10.00/week more. I also recommend buying
the parts from your Williams distribitor.
PQSSIBLE CAUSE: This is not a case where
the supply has failed and blown a fuse,
but a case of low voltage.
C18, a lOOmicrofarad at 25VOC might have
baked open -resulting in the above
problem. When replacing this cap, renerrber
that on the board the hash mark denotes
the negative terminal .
•
STAR*TECH JOURNAL, September 1987, Volume 9,
Number 7. Copyright (c) 1987 by Star Tech
Journal, Inc. All rights reserved. Address
inquiries to: PO Box 1065, Merchantville,
NJ 08109. Phone: 609/662-1080.
Subscription rates: USA $56.00. Canada/
Mexico $63.00. Other Countries $98.00.
Please remit payment i n US funds.
POSTMASTER: Sand address changes io
STAR•TECH JOURNAL. PO Box 1085•
Nerchanivilla• NJ 08109. STAR*TECH
JOURNAL (ISSN 0739-1048) is published
monthly by Ster Tech Journal, Inc., 18
North Centre St., Merchantville, NJ 08109.
Second Class postage pending at Camden,
NJ. Publisher/Editor: James Calera.