High pitch playbar noise

I've also got the high pitched noise from my Playbar as described by others here. Diagnostics number is 4539324. It's so annoying that we're simply not using it.

I've also got the high pitched noise from my Playbar as described by others here. Diagnostics number is 4539324. It's so annoying that we're simply not using it.
I left it on for several hours and it still makes the noise. Created another diagnostic in case it helps: 4539842

I've also got the high pitched noise from my Playbar as described by others here. Diagnostics number is 4539324. It's so annoying that we're simply not using it.
Hello josteinaj,

I'd recommend that you call into our support line so that we can take a deeper look at the issue. It may point to an issue with the unit itself but we'll want to rule out other potential contributing factors such as interference or signal issues. 

I've also got the high pitched noise from my Playbar as described by others here. Diagnostics number is 4539324. It's so annoying that we're simply not using it.
I called support today and after some troubleshooting we agreed that I would return the playbar and receive a replacement free of charge. Very friendly and helpful support line, thanks for the help! Hopefully the replacement will be without this defect.

I've also got the high pitched noise from my Playbar as described by others here. Diagnostics number is 4539324. It's so annoying that we're simply not using it.
I have had my playbar for a long time, but over the last 3 weeks I now have a high pitched sound coming from the unit. Have powered down and reset, but still same sound. Very like Tinitus

Hey all, I seem to be having the same issue - diagnostic : 4629345

I've also got the high pitched noise from my Playbar as described by others here. Diagnostics number is 4539324. It's so annoying that we're simply not using it.
I've the same problem myself, I received the PlayBar Friday and have had the same issue after switching my Television off at night...actually noticed this evening that if I have TV volume low enough you can still hear the whistling/buzzing.

Hey all, I seem to be having the same issue - diagnostic : 4629345
Ok, here's what I've tried to fix this issue with no success: I've done a factory reset. I've unplugged all cables apart from the power. I've put the soundbar in a different room without any other electronic devices with just the power lead. In all situations I get the high pitch whine. Do I just need to take it back to the store and switch it for another one? Is there anything else I can try? Cheers

Hey all, I seem to be having the same issue - diagnostic : 4629345
Hey Mohammed. I'm actually in Australia, do you have an Australian help number?

I've also got the high pitched noise from my Playbar as described by others here. Diagnostics number is 4539324. It's so annoying that we're simply not using it.
I contacted support and spoke with a technician today, unfortunately all troubleshooting was unsuccessfull, so It's down to getting a replacement. Great customer service, very helpful....