Thanks!Welcome to the FFO!
I do not think you have to replace the radio. And know dealers NEVER repaired sound systems. That was always sent out for a repair after the dealership tech removed the unit from the vehicle. The video link above shows how to remove the radio from the vehicle.
At that point you are going to need to disassemble the radio.
Either do it yourself or find a repair shop.
You did not list your location so I can not search for that. There is a good shop here in Phoenix. And if it were me I would at least make the attempt to disassemble.