820-3481-A no wifi but have BT

[protocold]

Board 820-3481A iMac 2013 27" with unknown history. Board seems clean.

Tried to replace a few known good airport card but all of them have bluetooth detected but WIFI not detected.

Schematics is not available but 820-3478A wifi/bt area seems to be the same...

where to start?

 

[2informaticos]

Do you get 3V at pin 1 of J3500?

 

[protocold]

sorry my bad, i find out i used cards from other years all along... although those cards work but they are not the original card used in this particular model and hence probably why Catalina didnt initialize them or something..

Now i installed Sonoma/OCLP and the wifi is working.