Outside of Time
Enthusiast
I had a similar issue, but it may not be the same as yours. My issue was with the vertical sync. All I had to do was re-seat the cable going from my blast city i/o board to the monitor and that fixed my problem. Also you may want to check to see if your monitor is set to 15khz. If that doesn't work for you then you may want to adjust your pots on the control board of your monitor. You may have to take the monitor out to reach the adjustable pots depending on which model of monitor you have. Lastly if all else fails you may need to re-cap your monitors control board.