[Cinema 800 Squealing Noise]

I have the same problem and must unplug and then restart the bar to resume audio. 
I have no other solution, but I wonder if this problem is more widespread.

[Cinema 800 Squealing Noise]

On 7/16/2023 at 7:09 PM, vihurricane said:

For the last 2 years, I’ve been dealing with an intermittent issue on my Klipsch Cinema 800 sound bar. It is connected to a Sony Bravia XBR65A8H via HDMI eARC. I also have a pair of Surround 3 speakers. The soundbar powers on and off with the Bravia.

 

Every so often, the speakers will emit a low squealing noise when they turn on with the tv. The display comes up and I am able to change the volume, but there is no audio from the content on the tv. I have tried to power down the soundbar while it’s in this state, but the eARC connection causes it to power back on automatically when it recognizes the active input on the tv. The only way to reset the soundbar is to unplug it, wait for a few seconds and plug it back in. It works for 1-3 weeks and then it happens again.

 

I’ve reached out to Klipsch support about this but they seem to be bewildered by the cause. I’ve done factory resets, firmware re-flashes, and changed the HDMI cable twice.

 

Has anyone else experienced this and found a resolution, or does anyone have any ideas on a potential cause for the issue? I’m thinking I could use an optical cable, but then I’m limited on audio format support to Dolby Digital and not Dolby Digital Plus.

 

[Do I have the bitter honor of having the first dead Cinema 800? It begins...]

Update using a flash drive:

https://support.klipsch.com/hc/en-us/articles/4406163207316-Cinema-800-Firmware-Update

[Do I have the bitter honor of having the first dead Cinema 800? It begins...]

I spoke to customer service today who was aware of my problem.  They offered to replace the bar as they investigate and attempt to resolve any existing problems with the update process.  Apparently, other users have successfully performed a wifi update with this bar!

[Do I have the bitter honor of having the first dead Cinema 800? It begins...]

Now my bar does not work regardless of input.  Also, it doesn't turn off!  The only way to turn off the bar is to unplug it. The remote is worthless as well.  Waiting to hear from Klipsch about a resolution.

[Do I have the bitter honor of having the first dead Cinema 800? It begins...]

I have the same problem with a Cinema 800 bar, including the constant "UPDATING" notice.  I must be the second one with this problem.

Contacted Klipsch today and tried to reflash and a do factory reset with the rep.  No HDMI connectivity although bluetooth works fine.  My condolences, but at least you got a replacement offer.  My problem was kicked upstairs to a senior tech rep.