So my brother bought a pair of HD419's off Amazon refurb'd for the low, low price of $10. Now after normal wear-and-tear, sound only comes out of the left ear cup. Nothing out of the right. I'm wearing them now and the wire doesn't seem to be at fault. I've wiggled it and slowly inserted the plug into my computer headphone jack.
I only have a basic understanding of headphone innards and was wondering if anything knew how to fix this pair? Could I fix it myself? Or would I have to call up Sennheiser and arrange for them to fix it?