I have the same problem.. Tried all of the obvious solutions.
- Restart computer
- Restart Router and modem (same device)
- turn airport of and on
- delete wifi device and add it again
- delete all known connections
For no reason my macbook Pro, late 2011 won't connect anymore. I was online yesterday, but today it won't even show my router on the list of available devices. It shows all other available connections in my neighbourhood.
If my connection turns up, it does so after I restart the computer, and it only shows for 5 - 10 seconds. If I manage to hit it, and try to connect to it, it just says that there was a time out. then it disapears from the list again.
All other devices in my house can still use the connection. One macbook Pro, late 2009, one iPhone 4, one iPhone 5 and a brand new iPad.
The only one affectet is mine. And it has been working perfectly since october last year.
I have osx 10.8.4
How do I reset the airport device from the library? What files to delete and where?
I haven't tried changeing the broadcast channel on the router, because no other device in my home has a problem with connecting to it.