IPOD NANO 7G BLACK HORIZONTAL LINES ON DISPLAY

I bought an ipod nano 7g thru amazon in february 2013 and a few days ago some random horizontal black lines appear on the display; I live in Venezuela and the device is still with warranty; what should I do?
Serial No.: DCYKK5A8F0GR
Model: MD479LL
Regards,
JS

I have the same issue. The programs that cause it on my end are Mail and some of the Adobe products. I'm hoping it's not the video card. Of course, I'm having another issue with the monitor (30") not waking on a cold boot. An Archive and Install did NOT solve the issue, so if it's software related then it's most likely a conflict with software or it's imbedded within the User files.

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IPOD NANO 7G BLACK HORIZONTAL LINES ON DISPLAY

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