[FIXED] My ArcadeVGA doesn't "detect" the arcade screen...

[f4brice]

Hi all.

This is my first post on this forum and I'll first introduce myself.

I'm Fabrice, living in Besançon (France). It's a city close to Swizterland.
I'm 35, working in computer science.
Some week ago, I bought my first arcade cabinet : an Arcade Electronic Arca2500.
It's a generic cabinet setup with 2 x 6 buttons, 25" display, euro coins selector.

This cabinet is going to be a Mamecab. I'm using an ArcadeVGA2 PCIe and a JPAC.
I setup everything as expected, closely following howtos & informations found on forums.
My cabinet is nearly working fine, but I have 1 major problem with the ArcadeVGA ; I search everywhere on forums but could not find anybody who has the same problem previously...

Here is the problem.

When I power on the PC, I have on the cabinet screen BIOS messages as expected. Then I can see WinXP starting.
At some time during WinXP starting, the screen goes black for ever. At the same time on the JPAC, lights "sync in" & "sync ok" both go off.

Here is a picture just before de display goes black :


But if I connect an old CRT monitor who is 15 kHz-capable (Commodore 1942) and power ON the PC, everything is OK. I have BIOS messages, WinXP booting screen, and at last the desktop as expected. Then if I unplug the old CRT and connect the JPAC, I do have a good display on the arcade screen ! Switching resolution by using the Quickres-Galaga icon also works fine.

It seems that the ArcadeVGA doesn't detect the JPAC as a display and switches its display OFF when the ATI drivers load (of course I did use Ultimarc's drivers and no other driver).
But with the old CRT monitor, it can detect a display and keeps it video signal ON. Unpluging later the CRT and connected the JPAC may be OK because the display detection is already done ?

What do you think ?
I'm sure my old CRT monitor is NOT DDC-compliant (much too old).
There is a difference between this old CRT monitor and the JPAC as seen by the ArcadeVGA, but where ?
Maybe the JPAC inputs have not 75 ohms impedancy, and that's what the ATI RAMDAC is probing ?

Thank for any help.
Regards.

[ahofle]

Have you checked with Andy at ultimarc?  He is very good about answering questions about his products.

[AndyWarne]

This was an issue with the new HD2400 ArcadeVGA and is now fixed, so anyone else having this problem drop me an email: andy@ultimarc.com

[f4brice]

Andy, thanks a lot for your quick & effective help. 

[Ummon]

That's a decent cab, there. What scan range is that monitor?