I accidentally ripped a wire during the repair of my broken screen. its the golden cable on the top sticking out.
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http://www.google.com/imgres?num=10&hl=en&biw=1280&bih=933&tbm=isch&tbnid=vpSpH1DwRAYCfM:&imgrefurl=http://www.redmondpie.com/ipod-touch-4g-teardown-reveals-only-256mb-of-ram-and-smaller-battery-of-3.44-whour/&docid=cUD1z-QJLRVMkM&imgurl=http://cdn.redmondpie.com/wp-content/uploads/2010/09/iPodtouch4G1.jpg&w=550&h=412&ei=4HYbUJLYGIeCiwKSsICQBg&zoom=1&iact=hc&vpx=840&vpy=150&dur=227&hovh=194&hovw=259&tx=136&ty=98&sig=113754788133573530005&page=1&tbnh=136&tbnw=182&start=0&ndsp=27&ved=1t:429,r:3,s:0,i:85