Response from Jonathan: Steve,

The symptoms you are experiencing with your Sunset Riders monitor could be caused by some incorrect settings on your monitor chassis. You might start off your repair by adjusting some of these settings to see if it makes a difference in your picture. Check out our post on Adjusting An Arcade Monitor for more information. If the adjustments do not help your issue then you might have problems with some of the parts on your monitor chassis. We recommend Installing A Cap Kit first to see if it solves the problem. If the issue continues after the cap kit, it could be that the flyback or other parts on your monitor chassis have gone bad. At this point, you might give us an update so we can help you further troubleshoot your monitor chassis.

Hope that helps. Thank you for your question and good luck with your repair.