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Main => Monitor/Video Forum => Topic started by: Man_Utd on March 21, 2011, 01:20:43 am

Title: Double Image on Billabs Monitor
Post by: Man_Utd on March 21, 2011, 01:20:43 am

I have a Billabs BL25C90T, and I'm having trouble displaying 640 x 480 @ 60Hz.  I'm getting two images.
(http://i834.photobucket.com/albums/zz262/Man_Utd_01/IMG_20110216_202830.jpg)
I'm using Soft-15kHz, a j-pac, and a Nvidia 6600 (Gigabyte NX66256DP).  I've played around with the controls on the monitor but haven't been able to fix it.  Any help would be appreciated. 

Title: Re: Double Image on Billabs Monitor
Post by: BobA on March 21, 2011, 09:11:52 am

Looks like your jpac is not getting a 15 Khz signal so it is halving the signal.

"If required, can divide a 31Khz VGA signal in half so that it will display a stable picture on a 15Khz arcade monitor. Useful for checking boot-up progress and configuration (not for application use). Automatically stops dividing the signal when it detects a correct 15Khz rate is being send by the PC."

Probably something not setup correctly in soft15 or the card to give you a 15Khz signal.  Sorry no experience with soft15.

Title: Re: Double Image on Billabs Monitor
Post by: Man_Utd on March 24, 2011, 10:46:35 pm

Thanks for posting BobA.  I solved my problem by looking through the boards and came across this post http://forum.arcadecontrols.com/index.php?topic=110302.0 (http://forum.arcadecontrols.com/index.php?topic=110302.0).  I removed the jpac and connected the video card directly to the monitor and it worked. 
I wanted to use the jpac to block the high resolution signals from damaging the monitor.  Oh well.