CommentStreams:373bf005d4098687c91ddf5888f63e57

There is an error on the power switch connector. Pin 3 is not GND but the voltage of the power supply. (for example in my case I supply 12Vdc -> the pin is at 12Vdc). That Voltage is also the one supplied on the Speaker and power terminal (it is always supplied, also when the system is off by power switch)