Main > Monitor/Video Forum
Betson Imperial Multisync problem
KevSteele:
Jim:
1. By "fine-tune" I mean you can get better results if you watch the onscreen image while you manually degauss, and stop when it looks "right". It's as much a dark art as a science, but I did get better at manually degaussing each time I tried.
Location matters as well - my Betson has a faded red area when the cab is pointing in one direction that it does not have when turned 90 degrees. You've got to remember that all of this degaussing is working with/against the Earth's magnetic field. That's something pretty big to fight against...
2. I'm not sure what video card you're using, but if it's the ArcadeVGA card, run, don't walk, and get the AVGA MAME Resolution Tool:
http://mamewah.mameworld.net/downloads.html
It makes finding out what resolution each game is running on a cinch, as well as adjusting and testing each game's settings. Once you've fine-tuned one game, you can make the video settings of all other games that share that resolution match. Heck, it even has an "auto-optimize" feature that sets all games to their best resolution (and it works fairly well, except for some vertical games).
It almost makes the whole procedure painless...almost.
Kevin
The Spade:
So from what I've read here, my problem (MAYBE) can be solved by manually fixing the rotation by adjusting the hex slugs in the yolk coil, which I don't know if I would need insulated gloves or not (do tell and this area I'm an admitted newb) and we're just sitting here waiting for Betson's response to this?
I do understand, from reading many, many posts on building arcade machines, that the monitors are the biggest pain-in-the-!@# part of building.
Dave_K.:
Spade, so is your rotation problem limited to the 15khz mode only? Have you tried using the parallogram adjustment to right it?
My problem was mostly in the lower left corner drooping down quite a bit. Using the Trapazoid and edge adjustments I was able to even out the drooping so the bottom left and top right were off evenly, and then used the parallogram adjustment to right it perfectly. The only problem for me was some shearing at the top of the image, which I was able to limit somewhat using the other adjustments. Start out at zoom=0, do your adjustments, then start zooming in, and keep adjusting.
The Spade:
Again, the tilt again is obvious in the lower right and it inclines from left to right about 5 degrees and have tested it in 640x480 and 800x600. Shrinking the display you see the whole image is tilted. Again, the missing rotate 'chip' (or whatever) would fix this but we know why that cannot happen. :P
Dave_K.:
Are you saying the parallorgram adjustment did absolutely nothing? Are the top and bottom edges tilted across the same degree?