I was in need of a speaker in my room so I brought out my old Panasonic RX DS660 from my garage and hooked it up to my phone and it sounded amazing. About a week later I noticed a puff of air coming out of the left speakers top corner thing (I'm not sure what its called so use pic below for reference). If any of you guys can tell me how to fix this it would be greatly appreciated.
https
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(The pic is a bit small, it's the only good one I could find)
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(The pic is a bit small, it's the only good one I could find)