So I have a Flash Gordon. The upper flipper stopped working completely. I checked all of the connections, made sure the lower right flipper switch was switching contacts like it should to engage the upper flipper. Nothing worked. I changed the original board to a Alltek MPU just to see. The upper started working! But not after too much time, went back to not working at all again. I’ve gone as far as I know with checking connections and seeing if the lower flipper switch works. If I engage the upper flipper contact on the lower flipper switch, the upper flipper should engage correct? What should I check next? Maybe I should reflow solder to the lower switch?
Thanks in advance