Garmin Fenix issue…Any micro-soldering electrical wizzes about?

Morning,

Ive managed to acquire a lovely Garmin 6 Pro that has issues with Bluetooth. Pretty sure it’s a hardware issue. Doesn’t connect at room temperature but when it’s been cooled down in the fridge it connects fine whilst it’s cold. When it warms up it goes again. Thinking it’s a solder/connection issue.

A bit of digging found this:

https://www.reddit.com/r/GarminFenix/comments/1l385us/i_fixed_the_fenix_6_pro_bluetooth_faulty/

Has anyone had any experience with this or tried a repair? I’m always keen to try my hand to repair things but this is beyond my pay grade!

Any help or advice would be awesome.

Thanks 

Chris