Originally Posted by gunrunnerjohn:
Unplug the speaker from the board connection and measure each side to frame ground. You should read no connection.
1. With the speaker unplugged, I'm showing .1 on each outside pin on the horizontal board.
2. Before I did #1, I noticed I no longer have speaker sound. Also, there is a constant hum coming from the horizontal board. I know it's this board because I unplugged the 2 vertical boards.
3. Though I have no sound now, the speaker baffle moves when I trigger an event.