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2010 Samsung Plasma Buzz - Page 27

post #781 of 994
Guys,

I've been reading these threads for a long time; here, on Amazon, everywhere.

When I first got my unit a few weeks ago (manufactured in October), I heard a buzz. Right away. Very directional, when having the TV on a stand slightly below eye level, 10-15 feet away. Same as everyone else.

As others have hypothoized, I'm convinced that those who are not hearing the buzz either have the TV mounted on the wall slightly above eye level, are not sensitive to that time of buzzing, etc. Last night, I listened to my TV for a few hours on the sofa and it sounded like the buzz had lessened? Was it the programming or my position?

I had a Samsung tech come out, and he was tone deaf. They said a supervisor would come out, but he's been ignoring my calls. At this point, I'm happy with the TV, and am likely going to see what happens when I mount it on the wall.

Take care,

ccsint
post #782 of 994
Quote:
Originally Posted by ccsint View Post

Guys,

I've been reading these threads for a long time; here, on Amazon, everywhere.

When I first got my unit a few weeks ago (manufactured in October), I heard a buzz. Right away. Very directional, when having the TV on a stand slightly below eye level, 10-15 feet away. Same as everyone else.

As others have hypothoized, I'm convinced that those who are not hearing the buzz either have the TV mounted on the wall slightly above eye level, are not sensitive to that time of buzzing, etc. Last night, I listened to my TV for a few hours on the sofa and it sounded like the buzz had lessened? Was it the programming or my position?

I had a Samsung tech come out, and he was tone deaf. They said a supervisor would come out, but he's been ignoring my calls. At this point, I'm happy with the TV, and am likely going to see what happens when I mount it on the wall.

Take care,

ccsint


I just received my TV as well PN58c7000. Right now I do not have any devices connected to it besides running the slides on a flash drive and its connected to a power conditioner (Belkin PF30). I can hear the buzzing even past 10 feet. I have not yet had a tech come out. My TV is mounted on the wall
post #783 of 994
I got 42C450 and 50C450 around June. and Nov. respectively. from Amazon

I didn't hear any "buzz" sound within a foot away from the TV set. Although I didn't listen very closely for the sound but definitely not noticeable.
post #784 of 994
this is overrated.i just got a 50" plasma C450 and i can't hear anything from 1" away
post #785 of 994
Quote:
Originally Posted by yukycg View Post

I got 42C450 and 50C450 around June. and Nov. respectively. from Amazon

I didn't hear any "buzz" sound within a foot away from the TV set. Although I didn't listen very closely for the sound but definitely not noticeable.

Quote:
Originally Posted by jan2206 View Post

this is overrated.i just got a 50" plasma C450 and i can't hear anything from 1" away

From watching the posts here for a while it seems the basic theme is: If your TV is 50" or under then you're buzzing will be less in most cases than the bigger sizes like the 58" / 63"...

A few posters still have bad buzzing at 50", but it seems much more rare. So swapping a 50" might help in those cases unless they are very sensitive to buzzing.

A lot of the talk is about the C8000/C7000 series also, but if the panel on the C450 is similar then I would think the buzzing would behave the same way on the C450.
post #786 of 994
Quote:
Originally Posted by jan2206 View Post

this is overrated.i just got a 50" plasma C450 and i can't hear anything from 1" away

If yours doesn't do it you wouldn't have a clue what we were talking about anyway. You getting a good set doesn't = everyone else being wrong.


Anyway, mine actually stopped last week. Came home and asked the wife what happened to the buzz and she said she hadn't heard it most of the day. Family was over and they asked if I had fixed the thing, lol. So, there is a possibility it may just stop.
post #787 of 994
I bought a PN58C6400 last week, and i have the buzzing bad. My wife even commented as SOON as i turned the tv on for the first time "What is that buzzing sound, why is it so loud?"

I am hoping it goes away, or we learn to deal with it/ignore it. But if not i am going to return it and get a replacement to see if that one does it too.

The buzzing is the ONLY thing that is preventing me from mounting it on the all and calling it complete.

Edit: It is sitting on a stand at about eye level currently. IF we mount it it would be a bit higher. And yes it is the loudest when seated directly in front of the screen.
post #788 of 994
Just got a PN50C8000 setup maybe 20 minutes ago. With the house as quiet as possible, and moving my head into the sweet spot from 10 or so feet away, I can hear no buzz, even when turning my ear towards it (I'm 32, don't have any hearing issues that I know of). This is with the volume on 5, a U-verse STB connected to HDMI1, but not on.

Right now based on my buying anxiety of the buzzing issue (which I do believe to be real and widespread for Samsung's), I'm thanking god....

Chuck
post #789 of 994
Enough about the buzz. It's time to shut down this thread.
post #790 of 994
Quote:
Originally Posted by chucky2 View Post

Just got a PN50C8000 setup maybe 20 minutes ago. With the house as quiet as possible, and moving my head into the sweet spot from 10 or so feet away, I can hear no buzz, even when turning my ear towards it (I'm 32, don't have any hearing issues that I know of). This is with the volume on 5, a U-verse STB connected to HDMI1, but not on.

Right now based on my buying anxiety of the buzzing issue (which I do believe to be real and widespread for Samsung's), I'm thanking god....

Chuck

God does a lot of wonderful things. However, your supplications might be better spent on some humanitarian purpose.
post #791 of 994
I'd rather kick god in the nuts about 1000 times actually...this TV is for my dad, stage IV cancer. God isn't on my Friend list right now....
post #792 of 994
why buy him a tv then unless ur playing on keeping it?
post #793 of 994
Because his life is watching TV...I'd rather whatever he's got left be watching as good of TV he can than the 32" CRT he's got now...

Chuck
post #794 of 994
Quote:
Originally Posted by dmwiley View Post

Enough about the buzz. It's time to shut down this thread.

So who believes there will soon arise a thread titled "2011 Samsung Plasma Buzz"?
post #795 of 994
Quote:
Originally Posted by jan2206 View Post

why buy him a tv then unless ur playing on keeping it?


What kind of question is that??????
post #796 of 994
Received and setup PN63C8000 today. I initially listened with the TV Speakers on and didn't hear any buzzing. I muted the TV and hear a very slight buzz, but nothing I would consider even close to abnormal. I hooked up to my surround sound and same thing.

Of interest, when I turn my head to the side with the TV muted, I do hear a buzzing sound. No big deal as I'm not going to watch TV with my head to the side.

My TV is not wall mounted. It's on a TV stand that's 17-20 inches off the floor. I sit approximately 14ft away from the TV.
post #797 of 994
Quote:
Originally Posted by 1750 View Post

What kind of question is that??????

It's a valid question.

Other than what I've already said on he watches a lot of TV, my mom will appreciate it after he's gone, as will we (my brother and I)....it won't go to waste.

And with that, back to the thread topic.....

Chuck
post #798 of 994
Quote:
Originally Posted by jan2206 View Post
this is overrated.i just got a 50" plasma C450 and i can't hear anything from 1" away
Right. Because YOU don't have the problem it's overrated. Give me a break. My TV buzzes noticably so it's not overrated it's UNERRATED.

Besides, if you've bothered to read this thread you'd see that many of us do not hear any buzz unless were 5+ feet away from the TV.

Your post is pointless & worthless. Just threadcrap.
post #799 of 994
my C550 buzzes, even if im more than a good away i can hear it.

but then again so does my parents LGPK550, albeit not as loud.

not a deal breaker as my computer makes a lot more noise when on and i watch 90% of content from dvi to hdmi on my PC and the computer is the louder of the two, and any moderate volume from my surround sound negates both

electronics make noise, deal with it
post #800 of 994
I've only had my C550 since Wednesday night, but so far I haven't gotten this buzz noise. Now there is a buzzing sound coming from the back of the tv, but this is normal for all plasmas. My Dad's Panasonic plasma makes a little less noise but his is also a 42". I should also mention that I live at 6,500' above sea level. High altitude should definitely make the set noisier than it would be at sea level, but I can't hear anything unless my ears are less than a foot away from the front of the tv. I even left the tv on all last night running a color slideshow. I wanted to really heat it up and see if it started making more noise, but so far so good.
post #801 of 994
Had my PN63C8000 delivered yesterday. It's been running pretty much non-stop and I have no buzzing. Not wall mounted and I live at slightly above sea level for those of you looking for common denominators. Firmware is V1027.

Tim
post #802 of 994
Quote:
Originally Posted by uscpsycho View Post

Right. Because YOU don't have the problem it's overrated. Give me a break. My TV buzzes noticably so it's not overrated it's UNERRATED.

Besides, if you've bothered to read this thread you'd see that many of us do not hear any buzz unless were 5+ feet away from the TV.

Your post is pointless & worthless. Just threadcrap.

WTF. how does that work. you cant hear it from 1 inch away but u can hear from 5 ft away?
post #803 of 994
Quote:
Originally Posted by jan2206 View Post

WTF. how does that work. you cant hear it from 1 inch away but u can hear from 5 ft away?

I think others have called this directional buzz. (Vs omnidirectional which you hear pretty equally from all directions, but only a limited distance from the TV. Maybe just inches or less in some cases.)

I've always thought about directional buzz kinda like a satellite dish except flattened out.

On a satellite dish you have a single best focal point where all the signals converge where you would hear / receive the signal. (This would be like only hearing the buzz from 10 ft away and not 5 or 15 ft.)

On a flat plane, like the plasma TV screen, that radiates signals from behind or inside the screen and toward the viewer you would have a vector centered on and pointing directly away from the screen where you could hear the sound the best vs just a single point. And right next to the screen you wouldn't hear anything other than possible omnidirectional humm, but further out it would become focused and you would hear the buzz... (i.e. You need a decent number of signals converging along that center line to hear much of anything. Right next to the screen you wouldn't have many since they are aiming outward in general. The signals can't be aiming outward equally or randomly either, but somewhat towards the center like a slightly curved dish otherwise they wouldn't be focusing in toward that center line.)

I imagine the area you can hear the directional buzz isn't exactly a straight line / vector, but I don't have the equipment to map this out precisely... And from all the discussions and what I've heard myself is pretty darn close to a straight line directly away from the exact center of the TV screen.

I'm sure someone has a better explanation, but this is how I've reconciled it in my head... For now...
post #804 of 994
Quote:
Originally Posted by jan2206 View Post

WTF. how does that work. you cant hear it from 1 inch away but u can hear from 5 ft away?

I purchase a PN58C8000 recently and can attest to the highly directional buzzing that's mostly heard from a distance.

I can't explain how or why it happens in this way but I can hear buzzing plain as day 12-15' away dead center at volume level over 20 and it goes away if I move side to side about 6" to either direction. And I can't seem to hear the buzzing if I put my ear directly up to the TV.

I'm waiting on a replacement unit from the store I purchased it from.
post #805 of 994
I bought a new C6500 last week and I do not hear any buzz at all unless I specifically put my ears up to the back of the panel. I thought I had a non-buzzer, but my wife and all my kids say the buzz is very loud and can be heard from the couch even when the audio is on at moderate levels.

I was pretty bummed that my hearing must not be too good. I never knew that. I am amazed that they can hear it so clearly and I can not. I can hear the fan in the DVD player from across the room, but not the plasma buzz. I am wondering if all the Samsungs buzz, and it's just that some people can not hear this particular frequency well.

I called amazon and they are sending another. However, I don't expect it will be any different.

To those who say theirs does not buzz, are you certain your hearing is excellent?
post #806 of 994
PN58C550. Directional buzz, audible from 10' away, but only when sitting front and center. Louder on dark screens, inaudible when watching cable. It's very audible when watching 1080p sources (blurays). I have no idea why this is the case.

To the person who said the buzzing went away after awhile: can you confirm that this is true when watching blurays as well? My set's buzzing went away too when it's warm, and we're watching cable, but it never goes away for blurays.

This is my second set. Returned the first one, hoping to get a non-buzzer.

Luckily, I always watch the tv off-center anyway (my favorite couch is off-center), so I decided to keep the replacement.

Definitely not getting another samsung till the buzz issue goes away though. Having to watch off-center is pretty ridiculous.
post #807 of 994
50C450
50C7000
58C550
58C7000
58C8000

All buzz(ed). So did my 2009's and my 2008 Samsung plasma(s).

Kuro buzzed. Panny V10 buzzed. Hitachi plazzy buzzed too. Every plasma I have ever owned (15 of 'em now) buzzed.

My Panny 50G25 was the tamest of all, and the Samsungs do rank up there as some of the worst offenders.

Big difference on the 2010's if I view directly front and center back several feet. Hornet's nest.

If I move my head up or down so my ears are not in the center of the TV, or if I sit off to the side and 10-12 feet back, then the buzzing is reduced significantly.

Obviously much of the reported variations in buzzing are going to be related to many factors, such as seating location, room acoustics, acuteness of hearing, etc.

But Sammys do have a bit of a problem with buzzing.
post #808 of 994
Quote:
Originally Posted by DocuMaker View Post

50C450
50C7000
58C550
58C7000
58C8000

All buzz(ed). So did my 2009's and my 2008 Samsung plasma(s).

Kuro buzzed. Panny V10 buzzed. Hitachi plazzy buzzed too. Every plasma I have ever owned (15 of 'em now) buzzed.

My Panny 50G25 was the tamest of all, and the Samsungs do rank up there as some of the worst offenders.

Big difference on the 2010's if I view directly front and center back several feet. Hornet's nest.

If I move my head up or down so my ears are not in the center of the TV, or if I sit off to the side and 10-12 feet back, then the buzzing is reduced significantly.

Obviously much of the reported variations in buzzing are going to be related to many factors, such as seating location, room acoustics, acuteness of hearing, etc.

But Sammys do have a bit of a problem with buzzing.

This is a good response. The people who responded above with 50"<= TVs or models other than the C7000 and C8000 should be taken with a grain of salt.

Almost every c7000/c800 owner bigger than 58" has reported a buzz. I think it's worth continuing to gather info rather than say stuff like "let's shut this thread down". If you purchased a $2,800 c8000 63" plasma like I did, this thread is pretty important.
post #809 of 994
Because of the factors necessary to generate a buzz I'm convinced that they ALL buzz. It's just that some people can't hear it or their watching environment doesn't produce it. So if you think you have a non-buzzer, move it to another location and you might find out yours buzzes too.

So far there's only been one person I know of who said they had a buzzer and replaced it with another set that didn't buzz in the exact same situation. But maybe it buzzed at a different frequency that he is less sensitive to? Who knows...

My set is on the cusp of acceptability. I'm trying to decide if I want to send it back or not. If I exchange it I might get one that buzzes more loudly or might have some other problem. I'm thinking I'll leave well enough alone. My bigger concern is that when I move my TV in the future I'll end up in a situation that causes even more buzz. That would really suck...
post #810 of 994
Well it's been 2 months and my ordeal with my buzzing PN58C8000 has finally come to an end. Hopefully this information will help fill in some missing information to everyone who's been dealing with this issue.

In that time, I've been through two versions of that set, met personally with the Quality Control rep from the Samsung plant in Tijuana and visited 3 different stores to try and find ANY thin-panel Samsung plasma that doesn't buzz.

When I met with the QC rep in November he acknowledged hearing the buzz from 15' away in our living room. He removed the back panel and replaced the center board which is the power supply (SMPS). That did nothing. While the back was open we held our ears against the different components to see if any one thing was making noise, and we noticed something very interesting...

Now I'm not an engineer but I truly believe it's the inductor coils making that noise.

From the back there are 3 large circuit boards - one SMPS power supply in the center, and a video processing board on either side, one X and one Y board. There are 2 inductor coils (they look like copper donuts) attached to the left board and one on the right-hand board. The coils are located about 1/3 the way down and in from the top and sides respectively. Trace your ears around this vicinity from the back or front and you might notice this is where it's the loudest.

In my cursory research I stumbled upon a phenomenon called "coil noise", a somewhat common occurrence in computer video cards. Inductor coils are like shock-absorbers for the power signal and they can make noise when they vibrate. (Feel free to Google homemade remedies for reducing coil noise)

So if I had to guess, the inductor coils are vibrating and it's resonating with the glass that's then acting like an amplifier projecting the sound directly forward. From what I've read Samsung removed a sheet of glass from the design to reduce the depth, and combine that with the need to compress all the components as close as possible to fit it into that frame. So the basic design is flawed, at least in my opinion. The QC rep even tried installing rubber washers between the circuit boards and metal frame but that also did nothing to reduce the buzz.

This is likely why virtually every thin-panel Samsung plasma made in the last 2 years has the same issue. They could easily be using the same exact inductor coils from model to model. I've personally heard buzzing in samples from the 8000, 7000, 6500, 550 and 650 plasma models in quieter showrooms.

For reference I also listened to a comparable LG plasma and 2 different Panasonic 58VT25's, all of which are traditional 3+"-depth designs. Those have what most would call the typical "plasma hum" but that is slight in comparison to the Samsung's buzz, and are almost completely inaudible from beyond 1-2 feet.

If you were lucky enough to get a non-buzzer it could be happenstance that you ended up with a sample installed with coils that were made with slight variances that don't vibrate as much. It also explains why some may buzz more than others - i.e a set may have been installed with one or two quiet coils but still got one or two noisy ones.

UNFORTUNATELY - Samsung still considers these buzzing sets to be in spec, so don't expect any help from them. They indicated they are working to resolve this issue for future models, but considering the 2011's will likely be unveiled at CES next week it's doubtful any improvements have been made. We shall see.

So if you're reading this and considering getting one of the remaining 2010 models or one of the new 2011's, please proceed with caution and make sure your store has a good return policy.

And in case you're wondering how my journey ended - the 58VT25 doesn't look so bad in my setup.
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