2002 S3 Head Unit Fault

[SlimK]

Hi all,

My brother has a S3 2002 plate and the head unit (BOSE) is lighting up and sounds as if its trying to read the CD but there is no writing on the display and there is no sound output from CD, Radio etc We were wondering what the fault could be? if its serious? if there is a fix etc

Thanks in advance

Slim