atomiswave having a picture with or without vga cable?

[800screws]

I just finished splitting my game king jamma cab with a atomiswave board.....the game king works fine, picture is fine......now with the atomiswave, the picture is shifted to the right of the monitor (24" lcd). both boards are running into a 2 into 1 splitter board(and everything is working correct). but when I unplug the vga cable on the atomiswave board, im still getting the picture(the dipswitch is also on for the vga)
how am I getting a picture still? im hoping if I straighten this out, maybe the picture will be centered on the screen too....
I was thinking of running a cga to vga board out of the jamma harness coming out of the splitter so I can adjust the positioning of the picture also(the monitor doesn't have that option)

[lilshawn]

lots of those video encoders have a frame buffer that will continue to show a picture even if the video signal has been lost. i'm not sure why, maybe just to keep the monitor active or what.

[800screws]

oh no...its not just a frame, the game is still playing and still has active picture.....likes it going through the jamma harness!

[lilshawn]

i see i see. I thought you had a signal splitter too. I misread.

yes, by default the jamma harness on the atomis supplies video regardless of the video connection format. the jamma video connection will just be VGA 31k signal vs a 15k signal that normally is output via jamma.

which model of "2 into 1 splitter board" are you using? if using the atomis computer straight to the monitor via VGA works fine, you may have to "disable" the jamma video signal from going through there. some well placed clear nail polish on the appropriate pins can insulate the connection...yet still removable with acetone if the need arises.

[800screws]

ah ok.....yeah, I didn't want to cut the harness up to disable the jamma feed.....well, the way I had it was a vga cable out of the atomis into the vga connector of the splitter board and the vga cable out of that to the monitor....but the atomis picture color is off(like the brightness is way up) and its offset to the right leaving a black bar on the left of the monitor...

its the splitter from jamma boards .com

[Malenko]

yes, by default the jamma harness on the atomis supplies video regardless of the video connection format. the jamma video connection will just be VGA 31k signal vs a 15k signal that normally is output via jamma.

^This is dead on balls. I went through the same thing when I converted my Faster than Speed cab to a VGA LED LCD.

You can just block the jamma pins like shawn said if you dont want to snip the wires.

[lilshawn]

you'll probably have to insulate the board edge with nail polish to keep the JAMMA video out of the switcher. i think the multiple signal paths are messing with the video for you.

before you go too crazy though, double check that straight VGA connection from the DB15 connector to your monitor results in a satisfactory display (eliminating the switcher). otherwise you'll be chasing a red herring.

12,13,14,N, and P are the pins you'll have to "paint" to insulate the video.

[800screws]

Yup. Pictures fine going direct.

[800screws]

been awhile since I got around to working on the cab....but not having much luck...
both atomiswave and game king with vga outputs going into splitter board with the vga out to monitor the picture is fine (I did block off the jamma output on the atomiswave).......only problem is the pictures on the atomiswave is shifted to the right leaving a black bar on the left side of the screen(monitor doesn't have any horizontal or vertical adjustments)...
what I tried was running both vga's out of the boards into the splitter board, and from there used the main jamma harness(the cabinet harness) r b bl wh g wires into a cga to vga converter so I could use the board adjustments to move the picture...well I guess that wont work since its still originally a vga signal to start.........

so I was wondering if there is a vga inline board that I can use to adjust the picture?

[800screws]

im using this monitor
http://www.staples.com/Samsung-true-24-inch-Monitor/product_1612049?akamai-feo=off



oh and the game king's picture is center and correct....

[Malenko]

I havent popped into my atomiswave setup in a tick, but can you adjust the monitor in the operator menu?

[lilshawn]

you'll probably have to insulate the board edge with nail polish to keep the JAMMA video out of the switcher. i think the multiple signal paths are messing with the video for you.

before you go too crazy though, double check that straight VGA connection from the DB15 connector to your monitor results in a satisfactory display (eliminating the switcher). otherwise you'll be chasing a red herring.

12,13,14,N, and P are the pins you'll have to "paint" to insulate the video.

you need to do this. I believe that switcher will convert any signal being output from the jamma harness to the VGA output. the jamma connection and associated wiring for the monitor will not handle 31khz signal. i believe this is whats causing the issue. the atomis computer is outputting via the jammas harness AND the VGA when set to 31k mode. the plain wires are not designed for this high frequency switching. a VGA cable has specific low impedance wiring, matched and shielded wire used for the higher frequency VGA video signals. I believe the switcher is trying to use the RGB from the jamma to display the video instead of the VGA connection even though it's hooked up.

you can easily insulate the video signals from entering your jamma switcher by painting nail polish over the appropriate pins for the video (Red Green Blue Sync Ground). this will force the switcher to use the VGA connection for the video and may fix the display issue. Then, if you find out it still doesn't work, it's easily reversed with some acetone and a cotton swab.

[800screws]

I did the nail polish trick.  That helped clear the colors of
The picture.  It's still offset on the monitor and the monitor doesn't have the adjustments that the cga converter has which I need! Lol
I'll have to check the menu screen

And I have completey eliminated the converter board. I realize that's just not gonna work

[800screws]

I checked the test settings.  There is a option called cross hatch that shows the picture offset.  I assume u can move the screen over which is what I need to do but I don't know how to move it. The start button selects the menu items and when u hold the start button it enters it but I'm not sure how to move the picture