My radio in my 95 525 started having the sound fade in and out. It would get quiter then no sound for a while the come back on.

Now no sound but occasionally it works for a few seconds. Lights and display is all on. No impact by listening to different sources ie cd am or fm. Fuses ok. Plug on back seems to be ok.

What do I look for? I did a search and could not find much help.
Thanks