I have the same problem with my stock 05 Accord stereo. The radio seems to work fine (will insert CDs, adjust sound, change radio stations, show that music is playing, etc) but no sounds come out of the speakers. When I turn on the radio, there is a "pop" sound, as if a guitar was plugged into a speaker; but no other sound comes out. Please let me know if you were able to solve this problem, and if you were, what the issue was.

Thanks!

 

03-05 Accord - it is likely a failed head unit.