Star Tech Journal
Issue: 1987-June - Vol 9 Issue 4 - Page 13
STAR*TECH Journal
~ ips & Tricks/Electrohome
Horizontal Tear
Wiles
Eyler Vending
Frederick, Maryland
By Sam
SOLUTION: There is a simple m:xlification
that can correct this problem.
* First resistor R314 rrust be changed from
390 ohms to 1.8k ohms.
PROBLEM: Horizontal Tear that cannot be
adjusted out.
EXAMPLE: Picture tends to wrap around.
I\.
)
CAUSE: When this monitor is used in a grure
or conversion with CoIIlfOsite Sync, you may
experience this problem. This monitor was
4 lot intended to work with CoIIlfOsite Sync,
although they are used as such in many
grures.
Most of the conversions I have done have
Composite Sync and the Horizontal section
has to be beefed up to correct this
mismatch. CoII1fOnent values have to be
changed in a few parts to renedy the
situation.
COIN-OP NAIL LISTS
USA: Over 11,000 names of coin-operated
equipment owners, operators, technicians,
suppliers, Jobbers end distributors. $575.
EUROPE: Over 2,500 Large operators end
distributors of coin-op equipment. $300.
Lists ere supplied
Labels in zip-code
deliverable. Order
JOURNAL, P08 1065,
June 1987 (13)
on pressure-sensitive
order. Guaranteed 93%
from: STAR*TECH
Merchantville NJ 08109.
SAMPLE COPIES of STAR*TECH JOURNAL for
our next State Association meeting ere
veileble. Just send us your requirements
uch es: Date needed, quantity, mailing
address end to wham's attention. Send
requests to: STAR*TECH JOURNAL, PO Box
1065, Merchantville, NJ 08109.
* Then capacitor C501 rrust be changed from
.001 Mfd to .027 Mfd at 50V Iey'lar.
* Finally, capacitor C303 rrust be changed
from a .1 Mfd ceramic to a 10 Mfd at 16V
electrolytic. (The positive side of the
new cap should go to the collector of
Transistor X305.)
W.l'E: When removing the old cap at C303,
notice there is an empty hole (soldered
over) . (pen this hole to accorrmodate the
closer lead spacing on the electrolytic.
This modification is needed alot when
doing conversions. You may also have to
readjust the Horizontal frequency control,
after the COIIlfOnent change.
*
MANUFACTURER'S NUMBERS
Customer Service
Arachnid 800/435-8319
Ardac 800/321-0765
Atari/Namco 408/434-3950
Bally/Midway/Senta 312/451-9200
Capcom 408/745-7081
Cinematronics 619/562-7000
Date East 408/286-7074
Doyle 208/743-3611
Exidy 800/538-8402
Konami 312/595-1443
Memetron 312/629-6500
Merit 800/445-9353
Nichibutsu 213/408-0518
Nintendo 800/633-3236
Premier 312/350-0400
Romstar 213/539-2744
Saga 408/435-0201
Showcase 800/642-7263
Taite 312/520-9280
Tecmo 800/457-6050
Tradewest 214/874-2683
Univid 800/321-2778
Wico 800/323-4258
Williams 312/267-2240
~ ips & Tricks/Electrohome
Horizontal Tear
Wiles
Eyler Vending
Frederick, Maryland
By Sam
SOLUTION: There is a simple m:xlification
that can correct this problem.
* First resistor R314 rrust be changed from
390 ohms to 1.8k ohms.
PROBLEM: Horizontal Tear that cannot be
adjusted out.
EXAMPLE: Picture tends to wrap around.
I\.
)
CAUSE: When this monitor is used in a grure
or conversion with CoIIlfOsite Sync, you may
experience this problem. This monitor was
4 lot intended to work with CoIIlfOsite Sync,
although they are used as such in many
grures.
Most of the conversions I have done have
Composite Sync and the Horizontal section
has to be beefed up to correct this
mismatch. CoII1fOnent values have to be
changed in a few parts to renedy the
situation.
COIN-OP NAIL LISTS
USA: Over 11,000 names of coin-operated
equipment owners, operators, technicians,
suppliers, Jobbers end distributors. $575.
EUROPE: Over 2,500 Large operators end
distributors of coin-op equipment. $300.
Lists ere supplied
Labels in zip-code
deliverable. Order
JOURNAL, P08 1065,
June 1987 (13)
on pressure-sensitive
order. Guaranteed 93%
from: STAR*TECH
Merchantville NJ 08109.
SAMPLE COPIES of STAR*TECH JOURNAL for
our next State Association meeting ere
veileble. Just send us your requirements
uch es: Date needed, quantity, mailing
address end to wham's attention. Send
requests to: STAR*TECH JOURNAL, PO Box
1065, Merchantville, NJ 08109.
* Then capacitor C501 rrust be changed from
.001 Mfd to .027 Mfd at 50V Iey'lar.
* Finally, capacitor C303 rrust be changed
from a .1 Mfd ceramic to a 10 Mfd at 16V
electrolytic. (The positive side of the
new cap should go to the collector of
Transistor X305.)
W.l'E: When removing the old cap at C303,
notice there is an empty hole (soldered
over) . (pen this hole to accorrmodate the
closer lead spacing on the electrolytic.
This modification is needed alot when
doing conversions. You may also have to
readjust the Horizontal frequency control,
after the COIIlfOnent change.
*
MANUFACTURER'S NUMBERS
Customer Service
Arachnid 800/435-8319
Ardac 800/321-0765
Atari/Namco 408/434-3950
Bally/Midway/Senta 312/451-9200
Capcom 408/745-7081
Cinematronics 619/562-7000
Date East 408/286-7074
Doyle 208/743-3611
Exidy 800/538-8402
Konami 312/595-1443
Memetron 312/629-6500
Merit 800/445-9353
Nichibutsu 213/408-0518
Nintendo 800/633-3236
Premier 312/350-0400
Romstar 213/539-2744
Saga 408/435-0201
Showcase 800/642-7263
Taite 312/520-9280
Tecmo 800/457-6050
Tradewest 214/874-2683
Univid 800/321-2778
Wico 800/323-4258
Williams 312/267-2240
Future scanning projects are planned by the International Arcade Museum Library (IAML).