CDX-M600R?

Hi,

My stereo has a problem which seems to be a bit strange. The CD part of it works ok but no sound is coming from any radio station. The stereo detects pre-saved stations but when searching it does not pick up any station, like it is not getting a signal. All cables have been check and are ok. I have also bought a new aerial in case that was the problem but still same thing.

Any advice?