somebody sold me the ipod with the pretense of it needing to be restored via itunes. didn't work, so i switched out the HD with a spare one i had. battery also couldn't hold a charge so i switched that out too. everything worked, except the audio(which is somewhat important in an mp3 player), so i switched out the audio jack 3 separate times(yeah i know i have a lot of parts lying around), so my conclusion was that the fault was in the logic board.(also i tried to put pressure on the corner to see if the soldering was just lose = no effect)