820-3115-B A1278 No wifi

[javier_herart]

Hello.

This macbook came in for speaker connector replacement, (they ripped the old one) , after replacing it I noticed that the macbook is not detecting the wireless card.

I have tried with another flex cable (not with other card) and same issue.

Any help?

NOTE: I do see the icon of the wifi but when clicking I do not see any wireless network

Thanks

 

[2informaticos]

Discard a software issue first.
Do PRAM reset and test the machine with another macOS.

Wifi hardware is correctly detected in System report?
You may have a problem with antenna cables.
Connect the antennas from a spare LCD assembly.

 

[javier_herart]

I checked all you mentioned and same problem, proceeded to check board and noticed that C3531 was ripped from board. Replaced it and now the wifi is working.

Thanks