Proton pack audio problem

Hi. Recently purchased a proton pack with sounds built in (using what is labelled as ninja tunes 2001 I believe). Anyway the issue I’m having is that whenever the batteries are connected, there is a constant clicking/tapping noise coming from the speaker. I cant hear it when there is sound coming through as normal but when in idle mode, it is very distracting. Any ideas or solutions? I would post a video from my phone but I’m not sure how to.

You might be able to upload the video to Facebook, and then link to it here if it’s privacy setting is set to public.

*We have one Proton Pack with these electronics in, any links to maker or instructions?