I have A 1980 Cabinet style Pac man I need help with.  I get A yellow, red, green blur on the screen. Volume works fine. I see no "Orange Glow" on the yoke of the CRT.  So far I have removed the game board cleaned it, checked for broken wires on the cables, reseated socketed parts checked for bent pins open traces etc.   Shouldn't there be an orange glow to the CRT if I get any picture?