I have a 64gb Playbook that loses the signal at 6 feet from router.Because of the way it acted I suspected that the wifi antenna was at fault.To test my suspicion I swapped the motherboard to another playbook that picked the signal up from 60 feet away (outside house) and sure enough the swapped motherboard picked up the signal just as good as the motherboard I had removed.Since I couldn't find a wifi antenna anywhere I got a playbook with a cracked digitizer and boken case.This playbook worked perfect even with the boken digitizer and housing and picked up wifi excellent.So i took the wifi antenna and motherboard out and put it in the one with the poor wifi strength and guess what???? Still doesn't pick up wifi over 6 feet away from source.Is everyone wrong about the antenna in the upper left hand corner being the wifi antenna.If that is the wifi antenna then what else could be causing the loss of signal when away from router.I've been repairing Playbooks for over a year and never failed to get one working right until this one. FRUSTRATED !!!!!!!!!!!!!!!!!!!!!