206 voices go problem

Hello friends, I have been having a strange problem for 3 days. When I turn on the confirmation of my vehicle, there is no sound or the sound goes to the court and the pit. There is an audio usb aux system in the car but there is the same problem in the rado, then the sound came, the song progressed, it is not plugged in the same place.

my brother, the same problem happened in me, the problem happened in their plots, the caploul that was brought from the door edges goes to the rear trunk under the right rear.

Show an electrician there is certain contactlessness.

Is the amp lights up correctly, is there a speaker that is not connected to the amp?

Actually, I looked at the amp, the lights are on, but I don't understand how much I will disassemble it.