Star Tech Journal
Issue: 1990-November - Vol 12 Issue 9 - Page 5
Bally Squawk &
Talk Audio Problem.
Todd Tuckey
TNT Amusements
Southhampton, Pennsylvania
Another Super
Power Supply Deal
Frank"The Crank" Seninsky
Alpha-Omega Amusements & Sales
Edison, New Jersey
PROBLEM
SUBJECT
I had a devil of a time figuring out why the Mr. &
Mrs. Pacman pin I was reconditioning kept losing
sound or speech or both after I closed it all up.
We have been testing quite a few power supplies
and monitors from new companies wishing to
sell their products to the amusement game
industry.
I changed the sound boards twice and kept
thinking I had bad boards- I even burnished and
cleaned all the chip sockets.
SOLUTION
I discovered that one of the 2 screws -which
holds the board to the metal door that opens on
this 2 piece head, when tightened, would cut into
foil trace of the J2 connector! Smaller screws
don't help. but a piece of fish pa per for insulation
fixed the problem.
NOTES
1. The J2 connector has only six pins on some
boards, so they have no foil near this screw.
Check and see if your J2 is the ten pin version
and you'll probably see the green foil cover worn
away around the screw.
2. Other Bally pins using this board have white
standoffs in these holes, but the 2 head pinballs
like Centaur 2, Mr. & Mrs. Pacman, & 8 Ball De-
luxe Limited Edition use these holes to secure it
into the metal door.
TEST
Recently, I was sent a Power Systems Model PS
1500 (made by AT&T) which originally sold for
$325. I was curious as to how such a power
supply would perform up against our industry
standards. It is rated at 20 amps at +5v; 3 amps
at +12v; 300 milliamps at -12v.
RESULTS
The Power Systems supply did quite well. Its only
drawback was that it did not have a tap for -5v,
but we don't really need -5v, as the coin door
lights can be+ 12v (change the bulbs).
SOURCE
A limited supply has been purchased by All-
Tronics of Gladwin, MI. Phil McGourty can be
reached at 800/ 458-6587. He is selling these
supplies at $45 each for five units or less and the
great price of$24.95 each for six or more! I have
no way of knowing how many will be left by the
time this is exposed to S*TJs readers. Good
hunting.
Talk Audio Problem.
Todd Tuckey
TNT Amusements
Southhampton, Pennsylvania
Another Super
Power Supply Deal
Frank"The Crank" Seninsky
Alpha-Omega Amusements & Sales
Edison, New Jersey
PROBLEM
SUBJECT
I had a devil of a time figuring out why the Mr. &
Mrs. Pacman pin I was reconditioning kept losing
sound or speech or both after I closed it all up.
We have been testing quite a few power supplies
and monitors from new companies wishing to
sell their products to the amusement game
industry.
I changed the sound boards twice and kept
thinking I had bad boards- I even burnished and
cleaned all the chip sockets.
SOLUTION
I discovered that one of the 2 screws -which
holds the board to the metal door that opens on
this 2 piece head, when tightened, would cut into
foil trace of the J2 connector! Smaller screws
don't help. but a piece of fish pa per for insulation
fixed the problem.
NOTES
1. The J2 connector has only six pins on some
boards, so they have no foil near this screw.
Check and see if your J2 is the ten pin version
and you'll probably see the green foil cover worn
away around the screw.
2. Other Bally pins using this board have white
standoffs in these holes, but the 2 head pinballs
like Centaur 2, Mr. & Mrs. Pacman, & 8 Ball De-
luxe Limited Edition use these holes to secure it
into the metal door.
TEST
Recently, I was sent a Power Systems Model PS
1500 (made by AT&T) which originally sold for
$325. I was curious as to how such a power
supply would perform up against our industry
standards. It is rated at 20 amps at +5v; 3 amps
at +12v; 300 milliamps at -12v.
RESULTS
The Power Systems supply did quite well. Its only
drawback was that it did not have a tap for -5v,
but we don't really need -5v, as the coin door
lights can be+ 12v (change the bulbs).
SOURCE
A limited supply has been purchased by All-
Tronics of Gladwin, MI. Phil McGourty can be
reached at 800/ 458-6587. He is selling these
supplies at $45 each for five units or less and the
great price of$24.95 each for six or more! I have
no way of knowing how many will be left by the
time this is exposed to S*TJs readers. Good
hunting.
Future scanning projects are planned by the International Arcade Museum Library (IAML).