Build Your Own Arcade Controls Forum
Main => Monitor/Video Forum => Topic started by: Sam98961 on January 15, 2012, 06:13:16 am
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I have been using this monitor forever on my mame cabinet using s-video. I recently enlisted the help of a friend to make a VGA to DB25 CMPTR cable so I can see what all the fuss was about. I do get video but the problem I'm having is the screen will not stop scrolling no matter what I do to the vertical hold knob. Also the image looks like crud. I can't seem to find the optimal resolution to run in.
I'm using Windows XP on a computer that has integrated Nvidia 6xxx graphics. I ran Soft15Khz and hit install. I set my resolution to 640x480 before rebooting and the old CRT monitor I was using said sync out of range 15Khz. So I hooked up my Sony PVM-2530 and I got an image but it looked horrible and would not stop scrolling. I am not getting the split screen issue as mentioned before when not using interlacing. I also do not have any options on either display settings in XP or using quickres to change to a resolution lower than 640x480. I can make the screen stop scrolling if I open ANY window and MAXIMIZE it. But when I do that all the text is jittery and you cannot read anything. If I set the resolution to 640x200, 640x240 or 640x280 as I've seen people suggest then the screen starts flipping out literally. It scrolls and scrolls and scrolls. If I mess with the vertical hold knob I can make it slow down but never stop.
I have used 2 different computers to test this with and I get the same results. Somewhat the same effects as what's mentioned in the following forum post: http://shmups.system11.org/viewtopic.php?f=6&t=34635 (http://shmups.system11.org/viewtopic.php?f=6&t=34635)
I played with multiple settings in powerstrip and I noticed if I changed the refresh rate it will either straighten up a bit or jump around like mad.
I promise I have searched high and low on google and these forums to find the "optimal" settings for this monitor in powerstrip but I can't seem to find anything that would help me. This is my last ditch effort. Does anyone use a similar config mind telling me what I should put for the resolution and any other misc settings within powerstip? I really want to get this working again without s-video so my kids will leave me alone about when the arcade will be working again. :badmood:
If you need anymore info or anything at all please let me know and I greatly appreciate any support anyone can provide.
Oh yeah, I used the following forum post as a point of reference for creating the cable. http://forum.arcadecontrols.com/index.php?topic=105067.0 (http://forum.arcadecontrols.com/index.php?topic=105067.0)
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Just a quick update. I managed to get a nice picture finally but the screen will not stop scrolling. Based on what I've read it appears to be a sync issue. Could anyone with more monitor knowledge than I verify that this schematic is correct? I guess I'm just going to build another cable.
http://nfggames.com/forum2/index.php?topic=4028.0 (http://nfggames.com/forum2/index.php?topic=4028.0)
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I would try tying the v-sync and h-sync wires together.
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Yes, they must be wired together.
byoac search engine terms: sony pvm-25 wiring
Third thread down; ninth post in thread.
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Awesome. I will give that a shot. But when you say tie them together do you mean both sync wires from the VGA side to a certain pin on the DB25 side? If so, which pin on the DB25 do I tie them to? Thanks so much for the help yall.
Oh yeah. And searching the forums for your keywords resulted in this.
(No results found)
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Yes, they must be wired together.
byoac search engine terms: sony pvm-25 wiring
Third thread down; ninth post in thread.
Guess I was too drunk to use the search engine correctly last night. Found the post you mentioned and I'll give it a shot later on. Thanks again!