Flowchart for Centipede board problems?

[ifkz]

I have seen flowcharts for monitor issues; step one is bad picture, go to step to and check this and that.  Is there a flowchart for game board issues, specifically for Centipede?

The neon green in Centipede has been replaced by an ugly forest green.
I checked my edge connector and it's still clean.  I moved the video cables from the edge connector and the picture does not improve.  I also took a vacuum cleaner to the socketed chips, but this didn't change anything either.  The screen characters are intact and the game plays fine.

I have an old chip puller that came with my PC toolkit, but everytime I try to get physical with the socketed chips on the board the creaks it makes sound terrible.  I'd hate to kill my 26 year old Centipede board!