Star Tech Journal

Issue: 1990-April - Vol 12 Issue 2

Betson Big Choice
Voltage Spikes
Frank 'The Crank" Seninsky
Alpha-Omega Amusements & Sales
Edison, New Jersey
Figure 1
Dear Frank,
I own about 15 Big Choice cranes with the new
MPU boards, the ones that make sound. The
problems I am having are too numerous to list.
They range from giving 80 credits for a quarter to
constantfailure of the motor relays. I have about
4 of the older Big Choice's left that I have veryfew
problems with. ..
I would like to know if you have written any new
articles or have any modifications for this crane ...
any help at all would be better than what we get
from our distributor. Thank you. Fred Thornbury,
West Coast Video Games, Riverside, CA.
Dear Fred,
I have encountered this problem a few years ago
and have followed the advice of Betson's Senior
Engineer, Bill Seibert. Your problem is caused
by voltage spikes or noise that is induced by the
electromagnetic field surrounding the crane
motors. The voltage spikes are being transmit-
ted to the logic board and causing you the many
weird problems that you mentioned. Check to
see if any of the metal parts of the motor assem-
bly are magnetized. If they are try the following:
SOLUTION
The quick and easy solution is to run a wire from
any one of the black common ground mi-
croswitches to the metal frame that houses the
motors. I would run a wire from a second
microswitch just in case one of the wires does
not make a good connection. In effect, you are
connecting the whole metal frame assembly to
logic ground and getting rid of the voltage
spikes.
These problems do not occur with the cranes
using the old logic boards because there wasn't
enough electronic logic present on the boards
(relays were used).
Figure 3
Rebuild That Old Truck Or Buy New?
Bill Johnston
Johnston's General Store
Buffalo, New York
PROBLEM
I've got an '81 Chevy pickup with 95,000
hard miles. It's in good shape except for the
worn out engine. I can have it rebuilt for
$1500, but I'm afraid other things will start
to fail. Is it worth it or should I just buy a new
vehicle?
SOLUTION
Buy a Chevy pre-conversion van which you
special order stripped but with all power ac-
cessories and doors and windows where you
want them, at invoice plus $99.
Give the dealer 99 bucks and
sign a purchase offer but with
a mandatory deadUne which
Chevy dealer meets or you
may opt to drop out of the deal.
You can delete all seats and
radio and interior trim, but
add all mirrors and consider a
driver side cargo door as an add-on as well as
air. (Let's face it, you might as well be com-
fortable while you're stuck in traffic, in the
big city, in the summertime).
Then you add your alarm system, safe, cel-
lular phone, cb, radar, am/fm/cd or what-
ever, and then you take it to a conversion
place and pick out your best insulation and
interior panels, seats, lights, running
boards, and that big oversize cap that turns
your van roof into a six-foot double sleeper if
you put the attic hatch thru the roof in the
right spot.
Add your storage bins and racks and use the
rear attic area for your spare tire and jumper
cables and other seldom-used items. The
racks near the back cargo doors can hold the
extra parts like power supplies and Joys-
ticks, but keep them close to the wall so you
can easily slip in two videos lying on their
backs.
CONCLUSION
Everything stays clean and warm in a van
and out of the weather. (Just
watch those wheels on the
back of the Xevious cabinets
when you tip them up on
their backs.) That's how I'd
do it. So sell that 9-year old
and start depreciating (and
appreciating) the new van!
Only thing that'll beat this
van would be your 27-foot
Winnebago with the rear bedroom converted
to game moving/repair area, overhead door,
power liftgate, and a kitchen table where you
can serve fresh coffee and collections to your
customers!

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