I have the same problem, and it started a few hours after upgrading the firmware to Lollipop 5.1 via an OTA upgrade. The tablet ran normally for a few hours and then rebooted. It's been stuck at the google splash screen ever since (10 days). I contacted Google tech support, and they talked me through using the recovery mode to clear the cache and when that did not fix it, to perform a full factory reset. That did not correct the problem either. They directed me to ASUS for out of warranty repair support which I have not done yet. The only people reporting success with a recovery are those who previously rooted their nexus 7 so could perform some firmware recovery operations, and those who replaced the logic board of their device. As I never rooted the device, it looks like I am stuck with a paper weight unless someone can work out a solution. This fellow at XDA is working on it... http://forum.xda-developers.com/nexus-7-2013/general/rd-thread-trying-to-solve-ota-brick-t3117495 Dennis
My American 3GS white connector did not flip open. It split into 3 little pieces of white plastic when I tried lifting it with the spudger. The plastic seemed very brittle; the phone is 4 years old. Amazingly to me, I was able to slide the flex tail back in to position and it made all the necessary electrical contacts (at least for the time being). Wi-fi cable #6 was not properly seated after first assembly, but everything is working now! Thank for the help.
My American 3GS white connector did not flip open. It split into 3 little pieces of white plastic when I tried lifting it with the spudger. The plastic seemed very brittle; the phone is 4 years old. Amazingly to me, I was able to slide the flex tail back in to position and it made all the necessary electrical contacts (at least for the time being). Wi-fi cable #6 was not properly seated after first assembly, but everything is working now! Thank for the help.
Dennis Smith