iPod nano (5th gen) camera freezes and becomes unresponsive when opening video

so maybe 2 years ago i bought a 5th gen nano off of ebay with a new battery, currently running 1.0.2 pc. everything about is working fine, except the camera. when i try to open the video camera, it simply freezes, shows a black screen, and is unresponsive, requiring me to do a force restart. and this isn't exactly a new issue either, its been like that since i bought it. any suggestions on what to do?