Wierd sound problem with the Alien Poker

Noticed awhile ago that I had an issue where an audio piece/voice would play when the lower right flipper (power) switch was actuated. Today I decided to take a quick peek at it....I suspected that it was creating havoc with the power to the sound board. I looked at the flipper coil and saw that I forgot to solder one side of the diode when I was working on the flippers.....oops. Works now....!