The fact that the clock works but the radio and CD functions do not activate suggests that the problem is inside the radio, and I fear that repair is unlikely.
If the display looked normal but you had no sound, I would suspect the amp in the left rear corner of the trunk. I would make sure that you have power to the amp on the heavy RT/GN wire. Should be fuse fuse #41, 30 Amp in your fuse box. However, I don't think a dead amp would affect the radio display. A problem in the antenna amp might affect radio function because that has two-way communication, but the CD should still work.
If the radio display looked normal, another suspect would be the volume control in your steering wheel. I think I have seen posts on the web about those.
All this was of no help to you - sorry.