Star Tech Journal

OCTOBER
m
1 998
STAR . . . TECH JOURNAL
WELl5 GARDNER U2000
TROUBLESHOOTING GUIDE
iY@lP
[&.~'1rffi@
Chuck Rabiola
Wells-Gardner Electronics
Chicago, Illinois
IPnIM~
I TROUBLESHOOTING REFERENCE GUIDE I
U2000- STANDARD RES
Mark Haber
Pinball Palace
West Babylon, New York
TOP EARNING PINS
I
SEPTEMBER
POWER SUPPLY PROBLEM?
When troubleshooting prob-
lems where it is not clear if
the power supply is at fault, it
can be isolated from the rest
of the board.
There is a bare wire jumper
at the output of the power
supply in location W1S6. Lift
the end of the jumper that is
connected to RlO0. Connect
a 60W or 7SW light bulb be-
tween the jumper and
ground. Apply AC Power to
the board and see if the light
bulb lights up and stays lit.
If the light bulb stays lit then
the power supply is working
and the problem is on the de-
flection side of the board.
MONITOR SHUTS DOWN
CheckD711,Z701, C713, and
C730. Replace if they are de-
fective.
If monitor still shuts down,
then check C107 and C11S
and replace if defective.
When these filter capacitors
are defective that causes the
B+ voltage to increase which
increases the high voltage
and activates the shut down
circuit.
U2000 FIELD RETROFIT
For a U2000 monitor with an
RCA/WG picture tube the
chassis can be replaced by the
K7400 chassis prep for the
SSH (0S4A7401-001).
The U2000s that have a
Rauland picture tube need
the standard K7400 chassis
from the 2SG (0S4A7401-
001)
and
the
yoke
(009A2988-001).
The older U2000 with the
high transmission glass needs
the K7400 standard chassis
from the 2SG (0S4A7401-
001)
and
the
yoke
(009A2988-001).
Note: Convergence may not
be optimum due to the
change in the gun structure
going from a high light out-
put to a dark glass picture
tube.
I
(Rated for inc()me)
1. Medieval Madness
2. Attack From Mars
3. Champion Pub
4. Scared Stiff
5. No Good Golfers
6. Addams Family
7. Junk.Yard
8. Theatre of Magic
9. Viper
10. Arabian Nights
l I. Cirqus Voltaire
12. Lost World
13.Star Wars 1lilogy
14. Star Trek NG
15. X~Files
(WMS}
(Bally)
(Bally}
(Bally)
(WMS)
(Bally)
(WMS)
(Bally)
(Sega)
(WMS)
(Bally)
(Sega)
{Sega)
(WMS)
{Sega)
Our Information is'compiled by
a small group of pinball opera-
tors who feed us information
monthly and combined with the
info from our route, we compile
the list. All of our information
comes from operators located in
the Northeastern United States.
Look for this list monthly in Star
Tech journal!