Hello,

I am having similar issues like pookeycade is having with his Rocky and Bullwinkle.
This is a list of things I tried to fix this:

1. Burned new CPU and Display Roms.
2. Checked the 5 volts to the display driver board and it checked out at 4.99 volts
3. Tried a different ribbon cable from the CPU board to the display driver board with no luck.
4. Tried a different display

Here is a video of the problem:

Any insight on how to fix this would be appreciated.

Thanks,
Ted

Thanks to all you pinsiders for your reply's. I appreciate it. Anyway it ended up being cold solder joints on the display power board on the connector pins. Thanks to the great Dr. Phil Ivany for his guidance and wisdom. Its much appreciated.