Post originale di: The iPhone Guy ,
Sounds like you are having one of two issues. The first, and probabaly not likely is that the wifi antenna got unplugged or is failing. The second and more likely thing is that the wifi/Bluetooth chip on your motherboard is loosing its connection causing you to have a weak signal. In order to do this repair, you will have to micro solder a new chip onto your motherboard. Not the easiest of repairs that's for sure, but can be done.