Build Your Own Arcade Controls Forum

Main => Monitor/Video Forum => Topic started by: robbbby on January 28, 2016, 04:41:25 pm

Title: Monitor Identification help and overscan? help.
Post by: robbbby on January 28, 2016, 04:41:25 pm

I've been having a heck of a time trying to get a picture to fit entirely on the screen, seems like the picture is cut off vertically and horizontally and no matter which knobs I turn on the chassis or on the pigtailed board, nothing brings the picture in.
I also have no clue what chassis I have.  I know it is a WG judging from the serial number sticker but I cannot find any other identifying stickers anywhere, I even pulled it right out to check.  I took some pictures in the hopes that somebody can identify it and hopefully give me some pointers on the scanning adjustments.

http://i251.photobucket.com/albums/gg315/robbbbyn/D6D7355D-AA67-42AA-A615-E80639571D44.jpg (http://i251.photobucket.com/albums/gg315/robbbbyn/D6D7355D-AA67-42AA-A615-E80639571D44.jpg)
http://i251.photobucket.com/albums/gg315/robbbbyn/047CABF4-4C4A-4504-B9D1-C50526EC63FD.jpg (http://i251.photobucket.com/albums/gg315/robbbbyn/047CABF4-4C4A-4504-B9D1-C50526EC63FD.jpg)
http://i251.photobucket.com/albums/gg315/robbbbyn/AEDC8A36-FB12-41D2-83C7-F4D6E309B2F4.jpg (http://i251.photobucket.com/albums/gg315/robbbbyn/AEDC8A36-FB12-41D2-83C7-F4D6E309B2F4.jpg)
http://i251.photobucket.com/albums/gg315/robbbbyn/94FA4EDD-27B8-4658-AD69-ED399D3287CD.jpg (http://i251.photobucket.com/albums/gg315/robbbbyn/94FA4EDD-27B8-4658-AD69-ED399D3287CD.jpg)
http://i251.photobucket.com/albums/gg315/robbbbyn/E1D59BE5-E611-4887-A02C-3E99DC233C9B.jpg (http://i251.photobucket.com/albums/gg315/robbbbyn/E1D59BE5-E611-4887-A02C-3E99DC233C9B.jpg)

If it's of any help the cabinet was originally a neo gevo mvs1

Thanks

Edit - the knobs on the loose board are "black level - vert pos - vert size - horiz pos"

Title: Re: Monitor Identification help and overscan? help.
Post by: robbbby on January 30, 2016, 07:08:07 pm

This is the issue I am having not matter what the resolution is and no matter if it's the windows desktop or an emulator.

You can see the image has rolled over top itself like folding a piece of transparent paper.  It's extremely annoying and I cannot for the life of me cannot correct it with any of the visible knobs on the chassis.

Title: Re: Monitor Identification help and overscan? help.
Post by: DudeRegular on January 30, 2016, 07:49:52 pm

Do the size adjustments do anything to the image? The first thing I would do is cap the monitor. Once you cap it see how things look and take it from there.

Title: Re: Monitor Identification help and overscan? help.
Post by: robbbby on January 30, 2016, 07:52:39 pm

Thanks, I just found a 12 year old thread that appears to be about the same issue i'm having with a near identical chassis.  Looks like it could be one of many things.

Title: Re: Monitor Identification help and overscan? help.
Post by: DudeRegular on January 30, 2016, 08:06:20 pm

Looks like a k7000. Grab a cap kit for sure. There is also quite a bit of reference out there for those flybacks with the white knobs. I would probably go ahead and replace that too while you have the chassis out.

http://www.therealbobroberts.net/k7000.gif (http://www.therealbobroberts.net/k7000.gif)

Title: Re: Monitor Identification help and overscan? help.
Post by: robbbby on January 30, 2016, 08:53:12 pm

It seems to really be an issue in vertical games, horizontal games like TMNT and the simpsons have no rollover at all, guessing it's still a chassis issue. 

Also where on his page are you finding that repair kit, it's a mess to browse.

edit - nevermind, found it.

Title: Re: Monitor Identification help and overscan? help.
Post by: DudeRegular on January 30, 2016, 09:37:11 pm

I didn't realize you were running a pc to this one. This may be a resolution issue  for the vertical games to run at their original resolutions. I would poke around the groovymame subforum to see how anyone else is running vertical games on a standard resolution arcade monitor in horizontal configuration. It may be software.

Title: Re: Monitor Identification help and overscan? help.
Post by: BuZz880 on February 14, 2016, 10:37:32 pm

Choose a resolution with max 256 lines vertical. If that solves the problem great. Otherwise there's a pot that can be adjusted that may help. I can send a pic if you need it.

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