Response from Jonathan: Rich,

Sounds like you may be having an issue with your monitor convergence. We recommend trying to adjust the monitor first before trying to change the monitor convergence itself. Check out our post on Adjusting An Arcade Monitor for more information on that process. If you cannot get the picture to correct itself with just the adjustments then you may need to modify the monitor convergence to fix your issue. Check out our posts on Adjusting The Convergence Rings and Monitor Convergence Tips for more information on monitor convergence.

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