Low Volume Hum: Has anyone else experienced this or is it an isolated incident i.e. a defective unit vs. a design flaw?
1269493
The hum might be due to a ground loop. This problem often happens when you interconnect devices via RF/audio/video/etc. cable that are plugged into electrical circuits with different grounds. To troubleshoot this, try disconnecting FM antenna, input and/or output cables from your receiver. Assuming that you have any kind of cable connecting the TV to the receiver, also try removing the RF cable from the TV. Cable TV hookups are reputed to be common causes for ground loops. If the hum goes away with a particular cable removed, search online for a ground loop eliminator device for that type of connection. An inexpensive audio ground loop eliminator is available at RadioShack stores; higher-end audio ground loop eliminators are available online. Cable TV ground loop eliminators are available from online sources. For further information, search the Web for the words "ground loop". Hope this helps! Dave
1824694
Mine also hums but just when setting there, as soon as I turn on the radio on the humming quits. It did hum one time and all I had to do was turn off then back on.
268489
Mine does not hum, I use it as an automatic transfer switch in the living room, it's been on 24 hrs a day for a month with zero noise. I would return it and try another one.
1665657
My speakers will hum if I have my cell phone charging near them. Do you have other electronic devices near your speakers?
95292
Mine hums a little, but to hear it you have to be really close to the unit and have the sound volume low. Basically, it is transformer hum and because the transformers are toroidal, it does not find its way into the actual audio output, so I don't worry about it at all.
62069
I've never noticed mine to make any noise at all. When I checked again just now, I put my ear right up to the camera and could barely hear a little hum.
969357
I've found it to be quiet. It's not noisless but the sound is more of a smooth hum than anything halting or harsh. The actual volume of the sound is pretty low.
928593
Mine does not have this high pitch you're talking about, just a loud hum, rather like a window air-condition unit. Since it is in my basement, it does not bother me. Maybe you have a bad unit?
968108
Mine isn't silent, but isn't horrible. Sounds like an issue to bring up with manufacturer. They might replace the unit.
561532
No, I have not had that problem. The only problem is an occasional hum in the speakers.
949532
I am getting the same thing. It is a buzzing/loud humming noise. Anybody know if this is a defect or if something else can be creating this?
2284697
I have Onkyo TX-SR805 7.1. I also have this hum. I've tries everything under the sun and nothing gets rid of it. I've isolated it to the receiver in a pain staking process of elimination. If anyone has a fix, I would be interested. I have to have to return it, because otherwise it is awesome. That hum is really beginning to get to my ear drums.
2246248
No hum. I've owned this unit for over six months. All outputs, including the headphones, have been dead silent. Have you checked for ground loops? -John
1357463
I have had this unit for almost a year in live application and have not experienced any unusual noise or hiss. I am sure if the gain structure is wrong any unit could have the potential for noise. hope that's what you wanted to hear
95291
If you're 100% sure it's not the source, then yes. I don't have hum unless I am on high volume but I have had a lot of source hum from my sound card. So check that out before shipping it off.
633306
May have a bad one, I installed my unit in the attic above the bathroom, but still here it humming when everything is quiet. Not too loud.
1722954
It has a slight hum, but not noticeably loud. I've had it for about 6 months, and there's nothing I would complain about it