Creative SBS A335 volume control issues.

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http://forum.allaboutcircuits.com – Hi, I've got a Creative SBS A335 speaker. For sometime, my right speaker gets muted and all the volume comes from the left speaker only. When I carefully turn the wheel sometimes the Volume works properly but if I crank it up it gets distorted again and the volume gets very low. And when I try to fix it by very slowly moving the wheel...some cracking voice starts up....then the volume just keeps on fluctuating. So I opened up the speaker and I found molten plastic over the wires. Is it normal? Please advise what to do. Attached Images IMG_2 (Embedded)