Monitor experiencing double (2.5) vision

[RaeftInvictus]

Hi everyone,

I'm trying to build my first MAME cabinet and I'm very new to all of this and to this forum.  I've searched and searched and tried to solve this issue without any help, but I'm not making progress.  So here goes:

I bought a Gauntlet: Dark Legacy cabinet.  It worked just fine.  I bought a J-PAC, MiniPAC, and ArcadeVGA 5000 card.  The miniPAC isn't hooked up yet.  Figured I'd wait until the video is working right before I deal with setting up Player 3 and 4.  I have the J-PAC hooked up and the ArcadeVGA 5000 card installed in a Windows XP machine.  I have a second monitor hooked up as well for troubleshooting purposes. 

Right now, I can run a ROM in MAME and it shows up on the secondary screen fine and the Player 1 and 2 controls are working through the J-PAC, but the cabinet monitor is repeating its picture two and a half times over.  I've spend hours and hours messing with the pots and the this is the best I can get the picture (not counting color or brightness which I'm not worried about at the moment). 

I'm using QuickRes on the software side and have tried every available resolution (all of which are 32 bit, which surprised me).  I've tried the Catalyst control panel to get it to 16 bit color just to see, but it makes no difference.

I don't know the monitor type, but I've included pictures.  I see a Hitachi label, but I assume that's just the chassis.  I see a generic looking sticker that says WG 1687233.  I don't know if that actually means it's Wells Gardner or if the WG is just a coincidence.  I've Googled the heck out of that number and I get nothing and the sticker it was on doesn't look very official.

Anyhow, here are some pictures and I'm happy to provide more on request. 

Thanks in advance!

TL;DR:
1. Bought Gauntlet: Dark Legacy
2. Cabinet worked fine
3. Tried setting for MAME via J-PAC and an XP machine running an ArcadeVGA 5000
4. Player 1 and 2 controls work as does a secondary LCD, but arcade monitor has double vision, or double and a half.

[grantspain]

nanao ms9-29,one of the finest and most reliable monitors ever made

have you checked the frequency jumper plug is on 15khz low resolution,pretty sure gauntlet legends was medium resolution game you see

[RaeftInvictus]

On the ArcadeVGA card? Yes, did that.  But I just noticed on another post where someone was talking about switching the harness on the chassis to 15k.  I didn't realize my monitor's board had that feature, but sure enough, it appears the harness was plugged into one that looked like 24k, but maybe it said 25k.  Also said High.  Next to it was one that said Low and 15k.  I switched it over to that and really got my hopes up, but with the harness plugged in there, the screen doesn't come on at all, so I moved it back.

Was I on the right track there?  And if so, is there something else I need to do besides just moving the harness?

Thanks for the quick response, by the way.

[grantspain]

the 15khz setting on the chassis should work if the 25khz is working,unfortunately i know very little about mame but i do know an awful lot about ms9-29 as i must have worked on hundreds of these chassis
try it again perhaps the plug was not fully on,i doubt the header is bad solder joint-common on ms8-29 and sanwa pm1745 but never seen it on a ms9-29

[RaeftInvictus]

All set now.  I tried it again and fiddled with it for a long time and then I noticed another post where you'd mentioned that this monitor has different pots for 15 and 25 so I tried readjusting them again and it came back on.  Had to mess with it for a long time to get a good picture after that, but eventually got there.  Thanks for your help!