300sd factory amplifier??
 

Recently while working on my alarm, I began having problems with my stereo. Basically no sound is produced from any of the speakers, with the exception of the subs. At first I believed that I had a defective head unit again, since I had a very similar problem 2 years ago, and the new head unit solved that problem. But now after purchasing a new head unit and having it installed (70 usd) we found out the problem did not lie in the headunit, but was within the factory components. The problem occured when I was mounting parts in the passenger footwell as well as when I removed the lower center console with the window switches. I insisted that my car did not have a factory amplifier, because the ones I am aware of are located in the passenger footwell. But Circuit City told me it had to be the factory amplifier because even when a new speaker was plugged in, no sound was produced. What could be the possible cause for this problem, and I know for a fact that the 4 speakers in the cabin are not blown. :confused:

Take out the rear seats. One on each side, for right and left channels.

But if all of your speakers are out, it might be your fader that died.

Solved the problem, the radio fader switch became disconnected.