CPU/Mobo Weird issue with my mobos onboard Wifi

nRiTeCh

nRiTeCh

Oracle
Just thought about dropping this thread to see if someone every faced such issue.

I have this ROG STRIX B550-F GAMING (WI-FI) motherboard.

Since a few months I'm observing a weird issue.
If I connect antennas to the onboard wifi the wifi connection in windows shows No network connectivity/Not connected.
But as soon as I detach the antenna the connection is back.

And for the onboard Bluetooth , if I do not attach the antenna, the module functions very weakly aka cannot detect any BT devices.
issue persists. still the same.

No issues with Ethernet port though.

If I want BT I need to plug-in the antenna and reverse for Wifi.

I'm thinking of removing the wifi/bt module altogether and reattach but this calls for to entirely remove the mobo/dismantle stuff and etc etc. which is very time taxing!
 
Before opening the case, things you should do.

Inspect the Gold SMA connectors on the back, if the wifi performance is degrading after connecting both antenna wires, this suggest that antenna or it's wire are shorting the connector, or lack of proper connection, missing proper ground return or intermittent connection or bad wire.

Try connecting only one antenna wire, see if with one wire the wifi works, if not then try with the other wire only. Yes your wifi can work with only one wire, only speed will be reduced because it won't be able to work in MIMO high speed mode.

For bluetooth maybe one of antenna wire gets it enough range so it works properly.

Clean the connectors with isopropyl alcohol, cotton swab, or very soft brush, let it dry, clean the center pin gently, it can bend easily.
 
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