i need help!!!!!

mzerba

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building a mame machine running windows xp. i just hooked up the neotec-2502 vga monitor.
it powers up fine showing the dell screen and then the windows xp screen. then the display problems started. i connected another monitor and changed the resolution settings to 600 x 800, reconnected to the 2502, that helped some. now it appears the screen is kind of in thirds and blurry. the only other thing i noticed was the connector from the monitor to the computer had fewer pin the my standard computer monitor. any ideas at all?
 
That monitor appears to have a max resolution of 640x480. Are you going to "stretch" all your mame games to that resolution?
 
Some cabinets have bad harmonics. Some MAME converters try to overcome it with extra layers of paint or oversized control panels.

I bet that's the issue here.

Edit: saw your pictures. Maybe not. You might be good in that department. Are those speakers shielded?
 
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25'' NT-2502
Resolution 640x480
Scanning Frequency: Horizontal 31.5 KHz, Vertical. 50~60Hz

Unless your computer can support that resolution and frequencies, your picture will not look correct without a converter box.
 
Tell Windows you have a Standard VGA monitor - 640x480

OR

You tell it you have a standard 60Hz refresh rate monitor and you set it to 640x480 resolution.

The key is running it at 640x480 resolution at 60Hz refresh rate. Figure out some way to do that and you'll be set.

Raymond
 
How to set it is to look for a button that says "List all modes". Windows started hiding 640x480 like 10 years ago so people would stop using it.
 
All you need to do is set Windows to 640 x 480 @ 60 Hz. If you can't see the screen well enough to do this, then press F8 during startup and then select "Enable VGA Mode":

vgamode.png


The way to do it from within Windows is: Control Panel > Display > Settings tab > Advanced button > Adapter tab > List All Modes button:

listallmodes.png


To make it easy to always be able to instantly change to 640x480, download the attached zip file. In there is a small command-line utility called reschange.exe (I've been using it for years because I frequently change resolutions). Also there is a simple batch file in there called 640x480.bat. All you have to do is double-click that batch file and it will change your Windows resolution to 640 x 480 @ 60 Hz. I keep shortcuts to various batch files with different resolutions in my Quick Launch menu:

quicklaunch.png
 

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Looks like MR might have provided a solution. However the folks recomending the arcade control site are not sloughing you off. That really is a good site more geared for what your doing
 
thanks maximrecoil

the f8 allowed me to see what i was doing and now the settings are correct and the monitor is working great with the computer and mala

now to start building my control panel!!!
 
Congrats!

This place is more for the arcade purists that are building/restoring older games. The folks at the BYOAC forums are MUCH friendlier to MAME builders - some of the folks here can be a little brash at dealing with MAMErs.

Raymond
 
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