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25" Hantarex Polo to 8Liners Chassis Conversion
By Nick Vazzana (AKA M3talhead)
Introduction
Got a broken arcade monitor? Maybe
you're just tired of searching for an decent-looking display and
don't have the dough to shell out for a new
(and extremely heavy) Betson
Imperial or Wells-Gardner D9200. If you already have monitor with
minimal burn-in, you can save a ton of money by simply replacing the
chassis (monitor guts) instead of buying a whole new display.
The following article will outline
the steps involved in replacing the chassis of a 25” Hantarex Polo
arcade monitor, with a new one from 8liners. 'Polos are a common
display found in many Midway and Capcom
cabinets, including the Mortal Kombat,
Killer Instinct, NFL Blitz, and Street Fighter line of games. The
one used here was removed from a non-working MK 3 cab and was
determined to be the perfect candidate for an 8liner swap due to a
very crispy chassis
that needed more than just a few capacitors replaced!
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This tutorial should give you an idea
as to the level of difficulty and skill involved in making such an
installation. If you have a moderate understanding of electronics and
are relatively handy, this just might be
the project for you. In addition, if you have a larger or smaller
display than what I used, many (if not all) of the steps can be used
as a guideline in replacing a different
chassis than the one I used. Just email the folks at 8liners.com and
see if they have any tips or suggestions. It should be fairly simple
for them to determine which replacement board is right for your tube
and what additional measures (if necessary)
will be needed.
Here are the specs of the 8Liners board
I used:
Specifications
:
DEFLECTION YOKE
MATCHING IMPEDANCE :
HORIZONTAL :
LH 1.9 MH
RH ~2.2 OHM
VERTICAL :
LV 116 MH
RV~ 54.4 OHM, RV ~13 OHM
INPUT VOLTAGE :
AC 110 VAC 50/60 HZ
POWER CONSUMPTION : 50 WATTS
INPUT
SIGNAL : R.G.B POSITIVE POLARITY 2.5~5.0VPP
SYNC SIGNAL : H/V
COMPOSITE NEGATIVE 2.5~5.0VPP
MATCH SOCKET : 1.2,3,4
H-FREQUENCY : 15 KHZ
V-FREQUENCY : 60 HZ
BANDWIDTH : 8 MHZ
CONNECTOR : 5 PIN (R.G.B,GND,SYNC)
DIMENSION(mm) :
L265×W200×H130
WEIGHT : 1.5 KGS/PC
PACKING : 12
PCS PER CARTON(N.W 19 KG G.W 22 KG)
PER CARTON : L63×W49×H53
CM
-Disclaimers-
1. Though I may refer to
8Liners.com in several places throughout this article, I am in no way
affiliated, related to, or being compensated by the proprietor(s) or
personnel of this establishment for this tutorial. Some of the
information in this article is borrowed from the 8liners.com website,
but are edited or expanded upon for clarity and simplicity.
2. The following procedures require
a fair amount of knowledge in electronics, good physical condition,
and a HUGE amount of common sense. If you lack even ONE of these
traits, please don't attempt any of the following procedures. Neither
I, nor any other reference cited in this article are responsible for
any injuries/damages that occur as a result of your actions. So
please, don't be stupid.
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