There is a radio/TV connected to the treadmill, that's why the earphones are plugged in, so I can listen. i reckon its static myself. Very annoying though.
Why are you connecting earphones to a treadmill? If you're getting shocked doing this then the 'ear shocks' are telling you something is not right :-o These are 'electrical shocks' and could be dangerous :-o You simply shouldn't be doing it :-o Get a battery powered earphone set or enjoy silence to be safe.
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