iPod - only one side of Earphones work

iPod - only one side of Earphones work
7.43 GB iPod. Serial No YM9275C13QX Software Version 1.0.4

ANSWERS:

Try another pair of headphones if you have tried this already which i figure u already did then youll have to change the headphone jack. If this is an iPod Touch it has to be soldered very easy i do it for all my clientele.