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Hi All, So I'm finishing off my Ben of Kent pack and have used GBFans light and sound boards.

I'm running everything off a 12v 68oomah battery, the light on the board turns on, all my pack and wand lights work fine but I have no sound, I've plugged in my phone to test the speaker and that works fine.

I've tried flicking the switches into different combos, but as per the documentation started with just switch 3 to play the Ghostbusters theme, nothing!

Any ideas as to what I'm doing wrong??

Thanks in advance

seems not many people know about these boards which is disheartening for how much they cost