Archived from groups: rec.games.video.arcade.collecting (More info?
> I have a Missile command board that was working but kinda' glitchy. Now
> all I have is a blue screen with vertical bars running through it and
> nothing more. When I set it on test mode I get 7 low tones and then a
> high tone. SO, I replaced the ram chip that is associated with the high
> tone and it did not fix the problem. Any help would be good. I have
> checked all the e-proms and processor in anothe board and they work.
> PLus all the voltages are good because I have another board and it
> works fine in the machine.
Do you get the same error code?