ArcadeVGA, J-PAC, Electrohome GO7

[GrizzlyAddams]

Ok. I'll try to make this as brief as possible. Though it probably won't be.

I got a beat up arcade cabinet with an electrohome go7 monitor in it. It didnt work. I rebuilt the entire chassis with all the parts I could replace, and then it worked beautifully. I left it as a Street Fighter II cab for while and last week I ordered the JPAC and the ArcadeVGA.

I install everything and boot it up. On JPAC, Sync OK and Sync LED are on. Picture on my monitor is rolling both horizontally and vertically. Shut down. Check all connections. Boot up. Some thing. H and V rolling in Bios, DOS, and Windows. I try to adjust POTs on monitor. I can get VERY close to a stable picture but picture still rolls very slowly both H and V (btw, I was using composite H-V-) and won't lock. I finally get H to lock but it's off center.

After a few hours of fiddling with it like this, I discover that if I remove the Sync connections from the monitor entirely it's behavior is exactly the same. So I make my own VGA Breakout cable and connect the ArcadeVGA directly to my monitor. Both H and V sync are twisted together connected to H-V- on the monitor. Now, the H Sync is locked and centered and is perfect. I couldn't screw it up if I tried. However the V is still rolling, and still can only get it to roll very slowly and it will not lock.

After another hour or so I finally threw my SF2 board back in just to make sure everything was A-OK. And it was. I hooked the ArcadeVGA back up and same thing.

Someone please advise. I've spent so much money and so much time, and now I'm completely stuck.

[JoeB]

Have you tried Bob Robert's site? He has great info there about getting sync right.

Also.. so monitors only need 1 of them, and not both.

[GrizzlyAddams]

Bob Roberts site didn't offer much insite into my particular problem. Also, I have tried just about every combination of seperate and composite sync I can think of.

[dabone]

On my g-07 I had to use seperate negative syncs.
I don't know if you can do that with a jpac.


So try running a vga breakout cable to the monitor.

I also found this on utilmarcs site.

No vertical Sync: No power to J-PAC. ensure the keyboard cable is connected to the PC.


Later,
dabone

[GrizzlyAddams]

On my g-07 I had to use seperate negative syncs.
I don't know if you can do that with a jpac.


So try running a vga breakout cable to the monitor.

I also found this on utilmarcs site.

No vertical Sync: No power to J-PAC. ensure the keyboard cable is connected to the PC.


Later,
dabone

I made my own breakout cable and with that the H scroll is perfect, but the V Scroll is still all out of whack. the JPAC (even though It's not in the video picture now) has been working the whole time.

[Raven..]

I have the exact same problem!  I have a beautiful G07, but it keeps rolling.  I had a different one in this cab before and same thing.  I replaced it with a WG monitor and the rolling went away.  I'm thinking that the JPAC isn't compatible with a G07 monitor.

I emailed Andy at Ultimarc a few minutes ago, so hopefully he'll have some insight.  I really hope there is a fix, becaues I have no clean WG monitors any more!  And I have a great looking G07