learpilot2
Member
I just bought a donkey kong. When you turn it on, the entire screen background is dark red / maroon in color, with 1 inch wide vertical strips throughout. The picture also looks like it needs to move an inch to the left. The monitor has a 1/2 inch wide black space vertically down the left side of the screen.
The game plays great, and after a few minutes of being on, the vertical lines diminish slightly, and the all red background turns more of a dark maroon/black, and is slightly less noticable.
The only other problem is a really loud background hum in the speaker. I have the 2 board system. I centered the CPU sound pot, and adjusted the very sensitive volume pot on the monitor board. That adjusted the volume, however, the really loud speaker hum is still present.
I found a missing ground wire on the power cord, but that repair made no change with either problem.
Should I adjust the V or H position pot to center the screen, and get rid of the 1 inch of vertical black screen on the left side?
Should I adjust the red pot on the yoke/neck circuit board. I know nothing about doing those type of adjustments.
Is this a case of a Sanyo monitor that just needs recapping, and the sound board re capping? Where is the sound board on a 2 board system? Is it part of the cpu board?
Thanks for the help.
The game plays great, and after a few minutes of being on, the vertical lines diminish slightly, and the all red background turns more of a dark maroon/black, and is slightly less noticable.
The only other problem is a really loud background hum in the speaker. I have the 2 board system. I centered the CPU sound pot, and adjusted the very sensitive volume pot on the monitor board. That adjusted the volume, however, the really loud speaker hum is still present.
I found a missing ground wire on the power cord, but that repair made no change with either problem.
Should I adjust the V or H position pot to center the screen, and get rid of the 1 inch of vertical black screen on the left side?
Should I adjust the red pot on the yoke/neck circuit board. I know nothing about doing those type of adjustments.
Is this a case of a Sanyo monitor that just needs recapping, and the sound board re capping? Where is the sound board on a 2 board system? Is it part of the cpu board?
Thanks for the help.
