Intermittment problem on my '64 Heat Wave. Occasionally rolling over the lit rollover buttons will not award points or advance the thermometer as they are supposed to. There does not seem to be a pattern to this happening, could be this way to start the game, could happen after a few advances, then work ok for a dozen than crop up again.
Not sure what triggers it, but usually after the ball has hit a few pop bumpers (not particular pattern) the problem goes away (at least for awhile). Again when this happens, the rollover does nothing.
I have the schematics although these are even harder for me to decipher than Gottlieb ones.
I checked obvious things like loose wires to the rollovers, advance relay,etc.
As always - thanks in advance for any and all help.