Quote Originally Posted by kenAJUSA View Post
I'm going to assume you have a stock headunit... It suddenly not working is usually due to several factors... That channel in the headunit died, there's a loose connection/wire (rare if you have stock), or the voice coil somehow burnt out in the speaker resulting in NO sound. Deteriorated speakers still produces a sound, crackling, pop, etc.
I'm having the same problem (left front won't work). I replaced both front speakers and still can't get sound out of the left. So the problem most likely is with my headunit? Well, I have a an aftermarket unit and it seems to be working fine. I just hope I can get this working, so I don't have to take it into a shop.

Any advice would be greatly appreciated.