Infotainment Cluster not working.
 

Hi all,

I bought a 2008 Volvo S40 2.4i a couple weeks ago. Everything was working fine until the alternator went out.
I changed the alternator my self and made sure all connections are tight but the infotainment center is no longer working, including the radio and climate controls.
I've checked the relays & fuses and everything seems fine.

Not sure what to do, its my first European car. Any and all help will be greatly appreciated.

Thank you in advance.