My 3 year old soundbar has started making a high pitch whinning noise when it is off? Why is this?
1865369
Do the lights show that the bar "thinks" it's off? (ie, it really does turn off). There are some wires connecting this to your audio source - if you disconnect them, does that cause any change? (also, as with any electronics, you might try unplugging, wait 20 seconds, then replug in). I can't think of a good reason for such a noise other than the unit dying, but these things might prove it.
670860
THe problem is in the location of the speaker according to a TV repairman. We have a Bose system now and do not use the TV speaker.
2267690
Mine does the same thing but I don't often notice it. Mayby a move to another area or chose a different speed setting. I leave mine on auto and moved it to a corner of the room and that solved the hum/whine issue.
1878193
I have same issue but only when paused for some time--at least 2-3 minutes. The soundbar goes into standby mode when it doesn't receive a signal. Default energy saving feature and I don't know any way to change. I usually skip back once or twice and soundbar will reconnect by the time I'm at the point where paused.
1448060
Yup, had the same exact problem. I thought it was the speaker to speaker cables, the Coax or Toslink cable and then my computers sound card but it wasn't. It drove me nuts. If it's still under warranty, send it back and have them fix it.
2284706
I had surround sound and two of the 7 speakers hummed when I put the Direct TV HD in "pause." To fix this problem go to the Direct TV remote, setup, settings, audio, and turn "on" dolby digital. Mine was off and caused the hum!
993648
I would like this answer also. I hooked my up to a toslink convertor an no sound came out of the sound bar. Any help?
148235
At low volumes it is not very noticable... but if you crank it up then turn off the source of the audio (like turning off your tv) leaving the sound bar on...then the hum is bad.
1924569
Yep, same here. My original unit used to work with occasional screeching sound.. Replacement worked for a week, then screeching came back and now disconnects as soon as I try playing something...
1872514
I'm a novice with electronics, but you could try hooking up a pair of PC computer speakers and plugging them in to the headphone jack to see if the problem persists in the new speakers. it could possibly bypass the problem and give you better sound quality. If not, there must be a problem with the soundcard and time for a tech to check it out. If it's warranty, get a estimate from experienced tv repair before you take it to where HCL uses, I've heard not so nice things about their work, google them for reviews of their company. Sorry, I don't remember name, but you'll find it in some of the bad reviews on Amazon. See if you can better advise, but I should be pretty close. Sorry I meant TCL. I'm a novice with electronics, but you could try hooking up a pair of PC computer speakers and plugging them in to the headphone jack to see if the problem persists in the new speakers. it could possibly bypass the problem and give you better sound quality. If not, there must be a problem with the soundcard and time for a tech to check it out. If it's warranty, get a estimate from experienced tv repair before you take it to where HCL uses, I've heard not so nice things about their work, google them for reviews of their company. Sorry, I don't remember name, but you'll find it in some of the... » Read More I'm a novice with electronics, but you could try hooking up a pair of PC computer speakers and plugging them in to the headphone jack to see if the problem persists in the new speakers. it could possibly bypass the problem and give you better sound quality. If not, there must be a problem with the soundcard and time for a tech to check it out. If it's warranty, get a estimate from experienced tv repair before you take it to where HCL uses, I've heard not so nice things about their work, google them for reviews of their company. Sorry, I don't remember name, but you'll find it in some of the bad reviews on Amazon. See if you can better advise, but I should be pretty close. Sorry I meant TCL. « Show Less
1596300
Your source is doing that. Try plugging it in a different device. Hiss gone, guaranteed. (Late answer, but might help future inquirers).
665741
Make sure you are watching the lights on the sound bar. It is hard to tell when it is on or off but the lights will blink notifying you of the level of sound. I have disconnected mine for now as the cable company has improved it sound quality or I would look at it and explain it more in depth. Good luck!
222292
I get the same thing from a Vizio. You could probably get an in-line noise filter to fix that problem but the hum mine isn't loud enough to bother me so I haven't done much.
496029
Yes actually. It has power but does nothing but collect dust. I think it's been more than 2 years though. We had other problems early on where the soundbar would just go on all by itself. Polk sent us a new bar but it did the same. We bought a Sony.
1670777
Ours is a piece of junk. It clicks off in the middle of movies several times. Looking for a different sound bar since we installed this one. Sorry.
1670779
I called Polk Audio service when my sound bar stopped working and they were very helpful. The solution for me was to power cycle the system so that it would rebooted. I did this by unplugging the power cords and then plugging them back in. Hope solving your problem is as easy.
345209
I have a similar issue with my Playstation 3 (which needs to be repaired now) where if it crashes, it would make my LG TV make a high pitched noise until I turn the TV off. I think it's a bug in the HDMI's audio output, or a sign that your PS3 is going bad.