Quoted from whthrs166:Yeah these issues are typical on not just CV but all of the Williams Bally games. My CV had a cold solder joint on the light board behind the Ring Master which caused the center WOW target light to wig out now and then. Not the easiest one to get out. I was fortunate that I had a new magnet core for my Mini Play Field and installed it on mine.
When I got my CV I sorted out all kinds of issues. Then I thought it was 100%. After playing it for months I realized that none of the WOW inserts lit up. Every single solder joint on that lamp board was cracked from countless ball impacts to the targets. I just reflowed all the solder and it's been perfect ever since!