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Samsung Soundbar HW-C450 sound cuts out randomly

by littlebird1186 / June 28, 2011 6:49 AM PDT

We bought a Samsung HW-C450 soundbar from Best Buy not too long ago. The sound is amazing and it works great, except for that we will be in the middle of watching a show or a movie and the sound will just stop. We have to turn the soundbar off and then back on for the sound to come through again.

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All Answers

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Samsung Soundbar HW-C450 sound cuts out randomly
by Samsung_HD_Tech Samsung staff / June 28, 2011 7:42 AM PDT


I'm not sure why it would just stop sending the audio, but I'm sorry to hear that you're having a problem with audio dropping out.

I might suggest trying a different optical cable if you're using optical as an input.


Post was last edited on December 22, 2015 10:09 AM PST

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Samsung Soundbar HW-C450 cuts out randomly II
by MASTERPCJIMBEAUX / August 30, 2011 9:28 AM PDT


I've had the random sound stopping issue but not too frequently and would just turn it off then back on again which resolved it until the next time. Well, during the last few days, I've had a bigger problem:

The sound goes in and out as though it is "pulsating" then, just out for so many seconds. Then on again. Off again. On again. Off again and so forth. I've changed the optical cable and also made sure my cable box was on PCM only.

I, too, got my bar from Best Buy (12/2010).

Please advise,

PS the HDTV is a Samsung plasma 3D model so should be fully compatible

Post was last edited on December 22, 2015 10:09 AM PST

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HW-E550 Random Loss of Sound
by Kevin2409 / September 7, 2012 1:26 PM PDT


I'm having a similar problem with the below.

TV: Samsung PN60E8000
Sound Bar: Samsung HW-E550
Direct TV

I'm just getting a random 1 to 2 second loss of sound. Sometimes it seems to be every 10 min or so sometimes 20 min but either way it is very annoying and should not be doing this.

I've tried to connect via HDMI 1, HDMI 2, & Optical with no change. I have not tested Bluetooth or USB yet because I simply do not use those features.

This has been a problem since the day I hooked up the sound bar about two months ago.

Just did it again while typing this message. It's been at least 20 min since the last loss of sound.

Totally random.

Any help would be greatly appreciated.



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Re: HW-E550 Losing Sound
by Samsung_HD_Tech Samsung staff / September 10, 2012 1:17 AM PDT

Hey Kevin2409,

Sorry to hear about this. Could you test something for me? It sounds like you bought these together and have had them connected since you started. Any chance you can test for me without the sound bar connected to see if there's any change. Also, since I see these are both rather new models, any chance you could connect up the new sound bar to your old TV to see if it behaves in the same way?

HD Tech

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Sound dropping out
by bjago / September 10, 2012 11:49 AM PDT

I am having the same problem with my samsung soundbar. the sound drops out and comes back. i was listening to the us open and it happened A LOT. now, watching a dvr recording it isn't happening as often.

i am using an optical cable.



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Kevin2409: Random loss of sound
by Rory1230 / December 30, 2012 11:37 AM PST

Exact same experience. What did you end up doing to resolve? Thanks.

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Same Issue HW-E550
by scarfacenyny / February 3, 2013 3:43 PM PST

I'm having the exact same issue with my Samsung HW-E550. Not cool! Just wondering Kevin2409 did you ever get a response back from Samsung? Its been randomly cutting in and out for weeks now and its getting old. I also have multiaple units connected with various cables and get the same results

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My similar issue
by justinjenc / October 18, 2017 3:23 AM PDT

I have a Samsung soundbar hooked up using an optical cable to my LG smart TV. I noticed that the sound bar cuts out for a second here and there, but only when watching Netflix through the smart TV. It just happened really bad which made me look into it. I have had this issue since I got the sound bar, and can confirm 100% it only happens with Netflix through the TV. Even if i rewind, the same parts cut out.

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Had That Problem; Solved It
by MrRTF / October 26, 2015 11:43 PM PDT

I too, put up with the "Audio Hiccups" for months and after trying nearly everything, including replacing all my connections and even the sound bar itself, I realized that it had to be something in the software or settings. So ... I went into Settings/Audio and changed the Digital Audio Output from "Auto" to "PCM" ... it worked!!! I haven't had any problems with the audio since; hope this helps you, my friend.

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by Amydione123 / January 9, 2016 10:21 AM PST

I was wondering, did you make this correction within the audio settings of your television? I recently purchased a Samsung sound bar too, and I'm having the same problem all of these folks are having. I don't think you can make that type of adjustment to the bar I have. But I realize there are many types of sound bars out there.

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TV Settings
by ksc0322 / January 23, 2016 1:05 PM PST
In reply to: Thanks!

On my Samsung TV I tap the Menu/123 button on the remote and it brings it up settings. Then click on Menu. Go down to Sound and click. Then go down to Additional Settings. Another Menu opens and the first one should say HDMI Audio Format. Click that and then set it to PCM. It should take you back to the menu where you clicked on HDMI Audio Format. Go down to Audio Format and set that to PCM. Exit out of the menu settings and it should be fixed. Hopefully this works for you.

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by ksc0322 / January 23, 2016 12:54 PM PST

This solved my problem! I got a new Samsung TV and the soundbar with it in October and have just been dealing with the sound going in and out since then. Last night it finally drove me crazy enough that I decided I needed to fix it. Nice easy fix thanks to your post!

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PCM is the solution here!
by candy8man / December 30, 2016 3:01 PM PST

It is a fine day after exchanging my sound bar twice to finally get the solution to the "hiccups" in the sound (random loss of audio for 1 or 2 seconds) ... I don't have a Samsung tv but was able to solve the problem by accessing my 'advance' audio settings and changing the setting from RAW to PCM.
Touch wood! The only slight drawback is that I had to up the audio on the soundbar to get the same level of volume! Thanks to MrMRTF!

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Sound bar
by Megan1109_ / January 28, 2018 5:03 PM PST

I just tried this so far so good!!!!

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OMG!! Thank you
by Houston0421 / February 6, 2018 7:14 PM PST

Thank you SOOOOO much. First sound bar we had this issue with. Sony could not help me. They made me ship it to them and said could not duplicate my issue and mailed it back to us. So we bought a new one (samsung) after about a day it started the hiccups.... So tonight, because it was hiccuping every 10-15 seconds, Google lead me to you!! Thank you Thank you it worked!!!

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Talked to Samsung
by bjago / September 10, 2012 12:30 PM PDT

Samsung has no clue as to why the unit cuts out. They told me to get it serviced!

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Also Talked To Samsung
by Kevin2409 / September 11, 2012 11:12 AM PDT
In reply to: Talked to Samsung

Same here bjago. I'm inconvenienced and have to send it to Samsung to get it serviced.

Now I'm taking the chance of damaging it further by not having the proper packaging. My original box is long gone at the dump.

To HD Tech,

Thanks for the reply.

I purchased the TV first and never had this issue with the sound. Started when I hooked up the sound bar.

I just purchased a smaller Samsung TV for my bedroom and I may test with it if I decide to send it off for service. To be totally honest i feel like I should not have to do any of this. I've spent way too much time trying to trouble shoot this issue and feel Samsung should send me a brand new unit after receiving my defective unit. At that point they can evaluate and figure out this problem that obviously others are having.

About to reply to email from Samsung to request new unit. Sorry but if denied I will definitely NEVER buy another Samsung product!

Will keep you posted

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Soundbar E550 sound cuts off randomly
by BrahMan20 / January 23, 2013 11:27 PM PST
In reply to: Also Talked To Samsung

To Kevin2409,

I too am plague with the exact same issue you are experiencing. Really frustrated. I had tried almost everything to resolve this problem.

What I've noticed is that this problem only occurs when watching Netflix through the Samsung TV SmartHub with the Soundbar powered on. No issues at all when using any other APPS in SmartHub.

I've called Samsung Support and they've asked me to try various things with no success. One of the Support staff said that he will be calling the Engineering Dept. regarding this issue. I will keep posted.

Do you have any updates on your side....were you able to resolve the issue?

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Similar issue...any updates?
by AuctionJunkie247 / January 28, 2014 2:32 AM PST

I purchased the Samsung HW-FM45C soundbar this past Christmas (2013), to go along with our newly acquired Samsung UN40EH5300FXZA 40" Smart LED TV purchased in September 2013.

TV speakers operate as normal 100% of the time.

With the soundbar connected to the TV via optical cable, I've noticed the sound will randomly cut out for seconds at a time on the soundbar when watching Netflix via the SmartHub app. (I have muted the TV sound, so I can easily determine when the soundbar drops out.) I haven't noticed the soundbar cutting out when watching youtube music videos or regular television, so I would venture to believe it has something to do with Netflix?

As some have recommended, I used an air duster on the optical cable/ports to ensure there wasn't something simple like dust causing the issue. I will be testing another optical cable in the near future, but seeing as how that doesn't appear to be the issue because the problem is not consistent, I doubt the cable is the issue.

Has anyone determined a root cause/solution to this issue?

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Re: Similar issue...any updates?
by Samsung_HD_Tech Samsung staff / January 30, 2014 12:56 AM PST

Hi AuctionJunkie247,

Have you tried changing the audio output on the TV to PCM? (menu > sound > SPDIF > audio output)

HD Tech

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Wireless connection
by jaybird671 / March 23, 2014 1:03 PM PDT

I have the same problem as stated by the other, random "silences". But my Soundbar is connected wirelessly not by optic cables and the sound setting is on PCM? Could dust in the ports still make this happen?

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Re: Wireless connection
by Samsung_HD_Tech Samsung staff / March 25, 2014 5:43 AM PDT
In reply to: Wireless connection

Hi jaybird671,

Have you tried an optical or HDMI connection to see if the same issue occurs?

HD Tech

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by jaybird671 / March 26, 2014 1:31 AM PDT

Yes i did and i still had same issue.

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Re: wireless
by Samsung_HD_Tech Samsung staff / March 28, 2014 7:14 AM PDT
In reply to: wireless

Hi jaybird671,

Do you notice this happening on all sources, or just when using apps?

HD Tech

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by jaybird671 / March 28, 2014 10:09 AM PDT
In reply to: Re: wireless

Only when watching tv.

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by stryker1976 / May 22, 2014 12:31 PM PDT

I changed the setting on my TV and Directv receiver to PCM and so far so good. No loss of sound. Fingers crossed.,

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Hw-k450 sound cuts out sporadically
by Htrnks / November 25, 2016 5:14 PM PST

I just bought a new samsung tv and sound bar (model hw-k450) and hooked it up. Within minutes of watching or listening to it, it started cutting out sporadically. If i turn off the sound bar, no issues at all thru the tv only. It is connected via hdmi cable to the audio output hdmi3 which is specifically labelled for audio output. I even went and bought a monster hdmi cable thinking it may be a poor quality cable that came with the device but still happens. In reading through this, i checked the sound setting and it is already set to PCM. Any help or answers would ve appreciated, i love samsung products and have many, this is the first real issue ive had. Mostly have been listening to pandora through the tv apps via soundbar.

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Did you resolve the fault?
by Kingers44 / December 28, 2016 12:46 PM PST

Hi, I was wondering if you had resolved the issue of your soundbar turning off? I've got the same one linked to a new Samsung tv which turns off when linked via HDMI, optical or wirelessly, then won't turn on for a random period of time. Did you replace the unit? Thanks.

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by Amydione123 / January 9, 2016 10:34 AM PST

I noticed that it only on Netflix too. And only on certain movies/programs. What's up with that? Ugh, this is frustrating!

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Another discussion found
by R. Proffitt Forum moderator / September 12, 2012 1:15 AM PDT
In reply to: Talked to Samsung

Another discussion ended when the owner used canned air on the optical ports and cable ends. Seems a bit of dust had got in there. This may or may not help here but it does bring up a good issue. Maybe optical wasn't such a great idea for consumer products?

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