Question 2.1 Sound System Glitch

[Big Matt]

My ECCO 2.1 sound system is making a loud buzzing sound when I turn it on, displaying only 'H1'. No FM or Bluetooth modes just a loud thud then it gets back to 'Line' mode. What could be causing this issue and what do I need to do?

 

[COLGeek]

Double check all wired connections for proper fit. Has anything been damaged?