STAR*TEcH
April 1997
Journal
REVITALIZE YOUR VIDEOI
With
STAR*TECH
Journal's
VIDEO
BRIGHTENER
Increase your profits by increasing the
brillance of your video monitor!
Game play will be enhanced and the
colors will once again be vibrant.
Reclaim those old and faded
video monitors by installing a
S*TJVIDEO BRIGHTENER!
& EASY INSTALLATION
11" TO 36" MONITORS
FOREIGN & DOMESTIC
Works on all
makes&
models!
Guaranteed
There are generally just two kinds of diodes used
in electronic pinball machines. NOTE: The two
types are generally NOT interchangeable!. They
sometimes may look the same, but you cannot go
by "color". You must read the tiny numbers!
Clear Precise Directions For:
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There are two common kinds of diode packages:
Clear Glass -which allows the orange-colored de-
vice inside to be visible through the glass, and Black
Epoxy.
Electrohome
Hantarex
Sanyo
Eygo
1N4148 are often glass (orange). 1N4004 are often
black, but not always!. It is probably a good idea
to keep a dozen or so of each type around for quick
repairs.
Directions Also Included For:
Sony, Hitachi, GE & Toshiba
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Ship __ STJ Video Brighteners @ $24
: Name: _ _ _ _ _ _ _ _ _ _ _ _ :
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Company _ _ _ _ _ _ _ _ _ _ _ _ _
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I Address _ _ _ _ _ _ _ _ _ _ _ _ _ I
: City/State/Zip__________ :
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Please add $4 s/h USA. Other countries add $9 via Air.
Star Tech Journal, POB 35, Medford, NJ 08055.
Ph: 609/654-5544. Fx: 609/654-1441.
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o Prepaid
o COD (USA only)
Joel Cook
Vickie Huisenga
The Pinball Lizard
Tucson, Arizona
Diodes sort of look like resistors, but have only a
single band at one end and some numbers that
identify the device type. The band on the device
body relates directly to the band on the schematic
diagram, and is a "block" to current flow. The
plumbing/hydraulic analogy is that a diode is like
a c;:heck valve that allows water to flow in one di-
rection only. Diodes similarly allow current to flow
in only one direction.
SAFE
• Wells Gardner
• Masushita
• Nanao
• Disco
ELECTRONIC PINBALL GAMES
DIODES
FITS ALL
Extends life
of weak or
dull monitors
and TVs!
IDENTIFYING DIODES IN
• 1N4148
Switching diode. High speed, low current. Used in
the switch matrix. 100 PIV (Peak Inverse Volts),
10 milleAmp.
•1N4004
Rectifier diode. Medium power. Used on solenoid
coils to dampen magnetic pulses created when
current stops flowing in the coil. 400 PIV, 1 Amp.