If the system powers on, responds to commands, but outputs no audio across any channel, the system is likely stuck in permanent mute.
The TDA7294 DMOS audio amplifier IC is vulnerable to static shocks, overheating, and shorted speaker wires. : Positive supply voltage input. Pin 8 & Pin 15 (-VS) : Negative supply voltage input. logitech z-5500 schematic diagram
Check the DB15 cable for bent pins or broken solder joints where the female connector meets the PCB inside the pod. 3. Loud Humming or Buzzing Noise If the system powers on, responds to commands,