Originally Posted by drewTT
Yes. I plugged the HDMI cable into HDMI 2 on the TV. Hum went away but as soon as I switched TV over to HDMI 2, hum is back. LoL...this is getting comical.
If I understand it correctly:
A. You even get the hum in the sub when the TV is on and the audio cable to sub is disconnected.
B. Removing the ground using the switch on back of sub makes no difference.
B. The hum is a rolling type that repeats every 20 seconds
C. You have a single HDMI cable from TV to receiver. With TV on and HDMI unplugged the hum goes away.
D. When you moved the HDMI cable to the HDMI2 input there was no him initially, but when you selected HDMI2 with receiver the hum came back.
1. You state that you get hum with audio cable to sub disconnected. You also state that it hums with the ground switch lifted on the back of sub. Did you try both at same time or just one at a time? If you did both together such that it hums with ground switch lifted and audio cable unplugged I am stumped and think you need to call in Ghostbusters.
2. Is there anything else connected to the receiver besides the speaker cables and the single HDMI input?
3. Is the receiver mounted in a metal rack panel or touching any other equipment (metal to metal)?
4. Is anything else connected to the TV besides the receiver?