Chosen Solution
After getting my MacBook back after the repair of my keyboard WiFi and bluetooth are not working any more. Is it possible that they damaged the antennas? Where is it located?
The antennas are located in the lid assembly and connect to the logic board near the CPU. Here’s two images which show the cables and the points they connect to. You could take the bottom cover off (which is harder than most) to check the connections on the logic board. I’m suspecting the logic board has a problem if the cables are connected. This series Bluetooth/WiFi adapter is part of the logic board (not a sub assembly)
