No equal sound in each ear

SOURCE: Logitech Headset with micro phone

I got this from another page here:

I figured out how to remove the headphone clip without causing cosmetic damage to the headphone casing. Unfortunately for me, this was after I had scratched up the casing already. Anyway, to avoid the cosmetic damage, use some kind of plastic tool, like a plastic spoon. After pulling off the headphone cushion, you will see the aforementioned 4 slots. Carefully slip the handle end of the spoon underneath one of the slots(not through them), and apply gentle pressure toward the center of the speaker. Do this for each of the 4 slots, and the tabs should easily come loose. Hope that helps.As for figuring out how to get the headphone to work, I'm waiting for that solution myself. The right headphone is out, but the left one works, none of the wires are loose, so the damage must be from my nephew being careless with the headset cable, and probably tugging on it once too often. Don't let your 15 year olds use your headsets, if they tend to be clumsy :)

SOURCE: Ear piece problem in N-73

i think it's a software issue ..
i suggest that you should flash another software on it..

SOURCE: ear piece problem.

change the ear piace

SOURCE: No sound comes through the ear piece on handset.

dear am seeing that there is really problem in ear piece of mobile u must have to let the check mobile to the repairer shop.

SOURCE: NO SOUND IN EAR PIECE

The issue lies in the glass fiber wire, the wire is coated with a conductive metal only a fe mircons thick.

Simply put the headset is a poor production model, the use of glass fiber wire more often than not results in a short in the wiring. Thus the sound will come out of one side, not at all, etc.