Dan, I found that my tech ran the wifi cable under the hinges and not above, rerouted the cable, soldered on a new fuse and it is good to go again. OP I hope the company finally fixed your problem, it is what sets the professionals apart from the fly by night guys in this industry. At my company I own up to problems and offer solutions to them, I don't want to ever have a customer leave with more problems than they came in with.

I'm currently dealing with this at one of my stores and it isn't the first time I've seen it, I'm not sure what part shorts to cause the problem, but I can for sure tell you what the problem more than likely is, and that is one or multiple fuses near your wifi connector have blown. To get the WiFi working they will need to be replaced, the more important thing to track down is what caused the fuses to short in the first place. Just to clarify, this is a technician error somewhere along the repairing the LCD. Like I said I'm actually staring at the screen right now one of my techs repaired trying to find what would cause the logicboard fuse to pop.

I have found that the LCD connectors on the Hi-Res and standard aren't the same. I have several standard res screens in stock including a full housing and have a 15" Hi-Res in for LCD repair, I immediately found that the connector on the logic board isn't compatible.