Electrical Questions? Ask an Electrician Online.
Hello and welcome to Just Answer. My name is ***** ***** I will be happy to assist you with your electrical question.
1) Plug the receiver and sub-woofer using an extension cord into another known working receptacle on a different circuit that does not contain lighting.
Does the noise issue go away or does it follow?
2) What type of light bulbs is the dimmer switch controlling? Incandescent or halogen or CFL or LED or Fluorescent strip bulbs?