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Atari Missle Command Screen Scrambled
Posted: Mar-24-2015 3:53 PM
Join Date:Mar-24-2015
Post: 5

picked up this machine, cleaned the track ball. Played it for days and all of a sudden I have a scrambled screen. The sound and everything else works.
Please help... I'm broken hearted


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Posted: Mar-24-2015 6:16 PM
Join Date:Jul-9-2012
Post: 140

That just looks like you need to adjust the horizontal hold on the monitor. What monitor is it?


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Posted: Mar-25-2015 8:08 PM
Join Date:Mar-24-2015
Post: 5

Hey.. Thanks for the response. G07-19" Monitor G07-904
how do I adjust the settings. I just messed around with it and got different results but still no real graphic. still scrambled

Posted: Mar-25-2015 9:33 PM
Join Date:Jul-9-2012
Post: 140

You have a sync problem. If the horizontal H-freq isn't working try pulling out the video wires and blowing them off and plugging them back in.


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Posted: Mar-26-2015 2:51 PM
Join Date:Mar-24-2015
Post: 5

Thanks so much for the images. I unplugged and reconnected them but only blew them out with my mouth. I have to get air in a can tomorrow.

Ron

Posted: Mar-26-2015 9:06 PM
Join Date:Jul-9-2012
Post: 140

I made a quick youtube video because you shouldn't need a can of air maybe a wire is broke? You did try adjusting the horizontal H-freq on the chassis all the way back and forth first right?

[youtube]UOadgBafD8k[/youtube]


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Posted: Mar-27-2015 4:42 PM
Join Date:Mar-24-2015
Post: 5

Can you see the sync wire in these pics?


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Posted: Mar-27-2015 4:46 PM
Join Date:Mar-24-2015
Post: 5

Thanks for the vid...I thought I almost had it with more H Freq adjustments. I was starting to make out some graphics... like the high scores and missile command graphics.

Posted: Mar-28-2015 3:59 PM
Join Date:Jul-9-2012
Post: 140

You have two! lol I found the PDF for that monitor http://pdf.textfiles.com/manuals/ARCADE/A-J/Electrohome%20G07%2013in%20&%2019in%20Color%20Raster%20[Service%20&%20Ops]%20[English].pdf

You have vertical and horizontal sync so you should try the v-hold pot too.


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