Why do I not get sound from speakers.

What is your question?

I was changing cabin filter, when removing screws that hold panel under the glove box an alarm starting sounding in the car. I tried using remote to shut it off but it would not work. Radio turns on and all it's functions work, but hear no sound on speakers regardless of how much I try turning it up. I've checked the fuses, there were none blown. What could it be? I am now trying to disconnect the battery for a while to see if I can get it to reset. I did a reset on the radio head unit and that changed nothing. I believe it's the amp or fiber optics problems, maybe?