Build Your Own Arcade Controls Forum
Main => Monitor/Video Forum => Topic started by: fa001 on February 22, 2009, 05:41:50 pm
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I picked up a used multimedia monitor. It works fine through the CGA video in however it has a pincushion problem that the adjustment on the monitor does not correct. Is it possible that the adjustment pot needs cleaning / replacement or is there some where else I should look for an adjustment?
(http://i228.photobucket.com/albums/ee141/fa001/newMonitor.jpg)
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does the pincushion problem change when you adjust the width
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if adjusting the pot has no effect , there may be a faulty diode/cap in h return and/or a faulty xistor in the pin amp.
make/model of monitor ??
"should " be an easy fix .
qrz
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grantspain,
The width control does not fix the pincushion.
qrz,
On the outside it says SELCO ITALTEL MULTIMEDIA
On the inside it says Videocolor A66ECY13X01
Playing around a little more I find that using the composite video in gives an image that can be adjusted correctly. But I can still not get the RGB in to correct.
It is strange the although I know the board outputs negative sync for this monitor to sync I have to set its switch to positive sync.
I think that I need to try a different RGB source. Is the pincushion effect caused by the source signal or the monitor circuits?
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Spent some time improving the wire connection and the picture is better.
The width does make a difference if I turn it down to less than full screen I can get the edge straight.
Perhaps that is how this board set plays.
(http://i228.photobucket.com/albums/ee141/fa001/newMonitor2.jpg)
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ok, its a 26"- and guessing an italian monitor . have a model number , pic of pcb ... something ?
qrz
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qrz,
(http://i228.photobucket.com/albums/ee141/fa001/monitor4.jpg)
And the only print I see on the board is
(http://i228.photobucket.com/albums/ee141/fa001/monitor3.jpg)
It is inside a black metal case.
Do you need different views or ??
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The monitor is a Seleco Italel Multimedia SMV-290 USA
Inputs Are:
Scart
VGA - 9 pin
Similar specs for the smv-300 (all I was able to find through google)
Product Features
Features
* FST Black Matrix 28" CRT
* Automatic Priority: video 1 - RGB - video 2 (only NBP)
* Colour System PAL/NTSC
* CTI & Comb filter (only NBP)
* Colour temperature: 6.500°K / 3.299°K (selector)
* SCART/Peritel: RGB + video 2 (only NBP)
* Random Delay on switching-on (adjustable) 5:15 sec.
* External regulations for geometry and picture adjustment
* Mains voltage: 110-120V Ac / 220-240V Ac
Picture Tube
* CRT: 28" CRT (71 cm diagonal), World-wide
* Dot pitch: 0.8 mm
Electronics
* Colour system (SMV300 NBP only): PAL & NTSC automatic selection
* CTI & Comb Filter (SMV 300 NBP only): standard
* Signal inputs: Composite Video, RGB +Sync
* RGB bandwidth: 7 MHz ±3dB
* Horizontal scan frequency: 15.625 Hz ±600Hz (PAL); 15750 Hz ±600Hz (NTSC) automatic selection
* Vertical scan frequency: 50-60 Hz autolock, with automatic size control
* Cut off: automatic
* Colour temperature: 6500°K (normal) and 3200°K (internal selection switch)
* Colour temp. adjust.: 6500°K internal adjustment for both black level and white level
Input/Output
* Analog RGB input: (SMV 300 RGB): via Canon DB9 connector.
* Analog RGB input (SMV 300N - 300 DELTA): via Canon DB9-sub and SCART socket.
* TTL RGB input (SMV 300N - 300 DELTA only): via Canon D9-sub
* Video input 1 (SMV 300N - 300 DELTA only): via BNC connector
* Video input 2 (SMV 300N - 300 DELTA only): via SCART socket
* Video output (SMV 300N - 300 DELTA only): via BNC connector (passive loop-through) just for Video input 1
Controls
* External controls (SMV 300 RGB): brightness; contrast; colour saturation and Hue; H and V amplitude, H and V shift.
* External controls(SMV 300N - 300 DELTA):brightness; contrast; H and V amplitude, H and V shift; Keystone, Pincushion and vertical linearity.
* Main switch
* External switch (SMV 300N - 300 DELTA): 75? on/off (only for Video 1)
Electrical Data and Operating Conditions
* Warm up time: 30 minutes
* Degaussing: Automatic when switched on
* Switch on delay: random within 2 to 8 sec
* Input Voltage: 120-240 V; 50/60 Hz with loop through power supply. Voltage rating manually adjustable though a voltage selector on the rear panel. Factory default setting: 220 Vac.
* Ambient temperature: from 0° to 40°C
* Relative humidity: from 0° to 90% not condensed
* Power consumption(max):2A @ 120V; 1A @ 220-240V
* Power supply loop through: 4 units @ 120V; 8 units @ 220/240V
Mechanical Data
* Dimensions (WxHxD): 594 x 469 x 505 mm
* Package size (WxHxD): 700 x 600 x 620 mm
* Net Weight: 40 Kg
* Gross Weight: 48 Kg (max)
* Maximum number of monitors can be stacked: 10 units
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ps,
Isnt that a vertical game?
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The game is 10-yard fight. It is horizontal. It just looks like a vertical because of the monitor adjustment.
I think that I need to dig out another rgb source to see how it shows up.
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a weird problem,i was gonna say if the width affects the pincushion problem then i would suggest looking at the east/west correction diodes but you said another input gives a perfect picture so i am not sure
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qrz,
This is the label on the back of the monitor case. Perhaps it will help you identify the monitor.
(http://i228.photobucket.com/albums/ee141/fa001/label.jpg)
- Fred
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It appears that every input just needs tweaking. As shown I was able to get MAME with an AVGA card to adjust. However I have ran into before that some game boards need more width and I have found that monitors will have an internal jumper or trimmer to increase the width. I think that that might be the problem with the 10-yard fight board I first tried. But MAME works!
(http://i228.photobucket.com/albums/ee141/fa001/monitorAVGA.jpg)
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would you mind posting what resolutions you've run? It could very well just be that it doesn't like a particular size.
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uprightbass360,
I think that I may have caused some confusion. My original post was from the actual game board not mame using some resolution. It is only from the game board that I could not adjust the monitor to match.
- Fred
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Ahhh I knew I was missing something. How about did you end up wiring the cord. I was working on one but I think I'm missing something. What was the pin out that you ended up using. I actually wired a cord as you had posted in your first post and got the immovable H axis. Did you end up separating your syncs?
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I wired as I posted in the buy/sell/trade forum.
I used the 9 pin cable that came with it cut the small round end off.
I found the wires inside to be:
pins 1&2 signal ground the shield wire
pin 3 Red signal the Black wire
pin 4 Green signal the Brown wire
pin 5 Blue signal the Red wire
pins 7&8 Sync signal the Orange wire
I guess that it is possible that not all the cables used the same color / signal combination. So you might want to test the pin / wire color.
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Also note that for whatever reason the sync switch on the back of the monitor seems to be backwards. I know that the game board put out neg sync but I had to set the monitor switch to positive sync. So if you are not get a solid picture try switching the sync switch.