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2010 Samsung Plasma Buzz - Page 23

post #661 of 994
Quote:
Originally Posted by aandea View Post


Got the TV delivered yesterday (BB) and I can confirm that I hear the buzz clearly. Exactly as described by others :
- unidirectional : dead in the center of the screen (I watch from 14 feet). If I move 2 feet left or right, the buzz almost disappears.
- louder when blacks are displayed
- power conditioners, ferites or panel squeezing does not have any effect.
- you can hear the buzz clearly when the sounde is muted. On normal volume, I can hear is well over the quiet scenes and I can hear it if I focus over the loud screens.

Will keep it for a few days to see if I can live with it (ignore it) or change to Panny VT25 65" (for $1K more). Based on the other posts, no point in getting another Sammy if I change.

Quite disappointing considering the cost of the TV

Note : great PQ.

(Similar story as StainedGlass)
Might be my over-reactive imagination, but after a few days of usage, I hear now 2 sounds. One when it's running, directional, from the panel, and one in stand-by mode, non-directional, limited to only 6 feet around the TV... I thought that if I turn it off, all sounds should go away... The sound when it's off comes from behind the panel and most likely is from the power unit (yes, I have a power conditioner). Maybe this TV was really defective ? I have decided to return it to BB and get a 65VT25.
The Panny was delivered today. First impressions:
a) when running, Panny emits a sound as well; but this is more of a regular plasma hum then the loud Samsung buzz. I can only hear it with all the speakers muted. When content is playing the sound is not noticeable. The frequency of the sound (higher I think) makes it more tolerable for me when I look for the sound.
b) in standby mode, there is no sound coming from the back of TV, like my TN63C8000 did.

Overall, I am reasonably happy with the switch. One Sammy feature I miss dearly though during the setup of the TV : The swivel panel. From a PQ perspective, I think that both TVs are excellent. Panny's 3D glasses are of a poorer design (and weight) than Sammy's.

(I do have a slight envy for the posters that got a pn63c8000 and hear no sound... wish I had such luck )
post #662 of 994
Ha, yes, the swivel panel is indeed quite nice. Am also a bit concerned with burn in on the 65VT25 versus the Samsung, but ultimately suspect that I'll be much happier.

There seem to be many posts of people with Samsungs which begin buzzing only after having been used for a while. Sounds like a nightmare to me...
post #663 of 994
Well an exchange has been setup through Amazon, a brand new unit should arrive in 5-7 days. I'll let you guys know how it goes.
post #664 of 994
I just received my replacement pn63c8000 this past weekend. I returned the first set because there was noticeable horizontal and vertical banding on light backgrounds. That set was completely silent. No buzz whatsoever. My replacement set has the banding but to a lesser degree...but it has a slight buzz only if you put your ear close to certain areas. You can't really hear it at all unless you put your ear right up to the panel. It's really hard to get a 100% defect free set and it's really unfortunate that we all have to play the panel lottery
post #665 of 994
Quote:
Originally Posted by johnnyhanson View Post

I just received my replacement pn63c8000 this past weekend. I returned the first set because there was noticeable horizontal and vertical banding on light backgrounds. That set was completely silent. No buzz whatsoever. My replacement set has the banding but to a lesser degree...but it has a slight buzz only if you put your ear close to certain areas. You can't really hear it at all unless you put your ear right up to the panel. It's really hard to get a 100% defect free set and it's really unfortunate that we all have to play the panel lottery

My set has a buzz, but there is a sweet spot where you hear it, and I don't sit in that spot. I did notice some vertical banding last night which I've come to expect from plasmas, but unfortunately the most prominent vertical line is almost dead center on the screen and it lines right up with the crosshair on Call of Duty: Black Ops. This is really hard for me to ignore because it's like one vertical line that's brighter than the rest of the image that I see every time I turn left or right. Really wish I never noticed it.....but I guess I'll play the amazon exchange game.
post #666 of 994
My sammy 58 C550 has a big line in the middle of the screen, I mad geting it replaced tomorrow, i dont realy trust samsung at all anymore.
post #667 of 994
Quote:
Originally Posted by DCunited View Post

My sammy 58 C550 has a big line in the middle of the screen, I mad geting it replaced tomorrow, i dont realy trust samsung at all anymore.

Same here, except I went from an LN52A650 (Samsung LCD) which had screen uniformity issues, after a while of phone calls and service techs saying it's "normal" I got a screen replacement...just as bad. I didn't give up though, I got an exchange, they were out of the LN52A650 so I got the new LN55C630, even worse uniformity. I call again, they send me the LN55C650, same damn thing. I call up their exchange/refund department and request a refund. He agreed and I got my 1,900 dollars back. I then bought this TV, after extensive research of course, and it buzzes...oh well, what can you do.
post #668 of 994
Quote:
Originally Posted by Korvas View Post

just got mine yesterday... Came with the buzz... Not too happy, this is my third one within a year... First one was last years samsung, had the buzz, and a bunch of burn in... It was the floor model, got a good deal, second was a panasonic, the power supply just died, so I figured I would try ot the new samsungs... Pn50c680 and this one has the buzz again... Need to find a way to quite it down... Other than the buzz, I am happy, but this is gonna cause a problem..

I would like to update this... since I have had my tv for a few days now, and doing the break in, the buzz I first heard seems to be less than when I got it, so maybe I was just trying to look for it too hard, ,or maybe it was because I moved the tv, or had it running for a while... either way my "buzz" is no longer an issue for me... and am very happy with my set, for now... lol
post #669 of 994
My 50c6500 came yesterday and its a buzzer - April 2010 build - from Amazon.
There's no question that this is a hit or miss problem and every buzzing set has the same type of buzz, in general.
But does anyone know what is causing it?? Is it copper wires, loose screw, something on the main board. If we all knew what was causing it, I'm sure there'd be a chance of all us being able to fix it with simple tools. Perhaps not tho, and I'm sure there's some of us that don't wanna pop anything open and risk voiding the warranty. Should I be the guinea pig? lol or maybe I overlooked a post on here...(yes i read this entire thread).
post #670 of 994
Just got my 58c550 and it has the buzz. I definitely notice it on quiet scenes. It's about the same volume as the Xbox CD-ROM drive. Quite annoying. It's the second set I've had from Amazon, since the first came with a cracked cover glass.

I am going to keep the TV another week and see if the buzz is tolerable or if it has to go. I'll keep you updated.
post #671 of 994
Got a PN58C7000 two weeks ago, shipped from Amazon. Fabulous TV. No buzzing.

BTW, it looks great on our new 70" Zen Media Cabinet from Room and Board. We are very happy with our choice.
post #672 of 994
Quote:
Originally Posted by egpaterson View Post

Got a PN58C7000 two weeks ago, shipped from Amazon. Fabulous TV. No buzzing.

BTW, it looks great on our new 70" Zen Media Cabinet from Room and Board. We are very happy with our choice.

What's your age, if you don't mind me asking?
post #673 of 994
Quote:
Originally Posted by xxmastermushxx View Post


What's your age, if you don't mind me asking?

I'm 47, but my 20-yr old daughter, 16-yr old son, or viszlas don't hear any buzzing either. Therefore I don't think there is high frequency noise that is inaudible to my elderly ears.
post #674 of 994
Quote:
Originally Posted by egpaterson View Post

I'm 47, but my 20-yr old daughter, 16-yr old son, or viszlas don't hear any buzzing either. Therefore I don't think there is high frequency noise that is inaudible to my elderly ears.

Great, thanks. I hope my replacement doesn't buzz.
post #675 of 994
Sorry for double post.
What is the version number on the back of your PNC8000? <---- (This is to all owners)
I have IZ02.
post #676 of 994
Any comments towards how the buzzing is affected when mounted on the wall with a low profile mount? Curious if the sound is amplified when reflecting off the wall or maybe the sound dissapates more so it's not so focused.

If I'm dead even with my tv, 18ft away I can hear it clearly, even with normal listening (on 6 or 7 for volume). The sound is emitting from the top back portion of the TV where the top two vents are on both sides.
post #677 of 994
Anyone hearing buzz on the smaller screen sizes like the 46" or 50" S2 models?
post #678 of 994
I just got a PN50C7000 from Amazon and while the picture is great and the features are nice the set makes an awful buzzing sound. So naturally I check on here and sure enough everyone else has same problem. I've called Samsung and they say its normal though I also have a 54" Panny, and previously had a 42" Philips, which never buzzed anything like this.

The buzzing seems to get worse or better as the colors change on the screen. I can hear the buzzing even with the TV volume at 15. It is definitely not normal. I tried to listen for the buzz at BestBuy but its hard with all the noise in there. I'm sure there are some sets that don't buzz.

Has anyone had any success with a Samsung service visit? I'd rather not go through the pain of exchanging a dozen times with Amazon.
post #679 of 994
^^ .. if you just received it frm Amzn, I would call them about your displeasure; they are very good about "exchanges" if not satisfied.

Exchanges: http://www.amazon.com/gp/help/custom...57204#exchange

Defective: http://www.amazon.com/gp/help/custom...=557204#defect (30 days)
post #680 of 994
Quote:
Originally Posted by cymdiggity View Post

I'm sure there are some sets that don't buzz.

they all buzz dude.
post #681 of 994
Quote:
Originally Posted by magdalena View Post


they all buzz dude.

Simply not true, dude.

For those of you who are having problems, I'd like to see acoustic spectrogram from your TVs from 0 to 10khz.
post #682 of 994
Quote:
Originally Posted by egpaterson View Post


Simply not true, dude.

For those of you who are having problems, I'd like to see acoustic spectrogram from your TVs from 0 to 10khz.

BTW, since this is AV science, a mic, a laptop, and Audacity are all that is required to produce a spectrogram.

It would be interesting to see if the buzzing is at a constant frequency or has any common root causes, e.g. Installation, tv settings.
post #683 of 994
Quote:
Originally Posted by egpaterson View Post
Simply not true, dude.

For those of you who are having problems, I'd like to see acoustic spectrogram from your TVs from 0 to 10khz.
no point. they all buzz.
post #684 of 994
Quote:
Originally Posted by magdalena View Post
no point. they all buzz.
All electronics buzz. The question is whether or not it is unacceptable. For what it is worth, here is the spectrogram and the spectrum from a measurement at 6am (very low background noise in the house) at 1-foot from my PN58C7000.



Yes, there is a tone at 1137 Hz, but it is at -58 db which means that it is inaudible with the sound-system turned on.

Again, I would like to see similar measurements from a known "buzzer".
post #685 of 994
Is it possible for a plasma to be 1.5 inches and not buzz at all?

Its expected that Panasonic and LG will go even thinner next year to match Samsung, so if its true that you WILL get buzz from thin tvs, then they are all going to buzz next year.
post #686 of 994
Quote:
Originally Posted by egpaterson View Post


All electronics buzz. The question is whether or not it is unacceptable. For what it is worth, here is the spectrogram and the spectrum from a measurement at 6am (very low background noise in the house) at 1-foot from my PN58C7000.

Yes, there is a tone at 1137 Hz, but it is at -58 db which means that it is inaudible with the sound-system turned on.

Again, I would like to see similar measurements from a known "buzzer".

Try measuring from 12ft, in a few different spots, head on?
post #687 of 994
Quote:
Originally Posted by egpaterson View Post
All electronics buzz. The question is whether or not it is unacceptable.
I totally agree with this (I hear buzzing on my PS3, Wii, laptop power supply, receiver, etc)... Even my Nintendo DS Lite buzzes when the sound is off. I can hear it from at least 2 ft away. (Please though don't start a Nintendo DS Buzzing thread. )

But the DS doesn't bother me in normal conditions. The PN58C8000 I returned drove me nuts in normal viewing conditions and even more-so at low volume.


Seems like the variables are at least:
  • the listener (age/sensitivity)
  • the setup (location/hookup/etc)
  • the TV.

To test this we would have to isolate it down to just the variable of the TV... And have at least a good sample size of TVs with the same model number. It's also going to be hard to remove the listener (with audio electronics) and the setup (would have to have a consistent installation) variables though...
post #688 of 994
If it were the setup, why would my PN63C7000 buzz like a beehive but my Panasonic 65VT25 be silent - exact same spot, connections, everything?
post #689 of 994
i hope this is ok...newb here I may have put this in the wrong section

So i got this set recently - pn50c450

awesome picture

but....

am i nuts or is the noise buzz humm people talk about...

http://www.youtube.com/watch?v=Vz8KTUAu0JU

crank it up since my mic pickup on so good on camaera but you should get the idea..

high pitch and it only comes on when tv is on...it is affected SLIGHTLY by contrast brightness settings but not that much...

so am i stuck with this bzzzzzzzzzzzzzzzzzzzzz
post #690 of 994
Quote:
Originally Posted by StainedGlass View Post

If it were the setup, why would my PN63C7000 buzz like a beehive but my Panasonic 65VT25 be silent - exact same spot, connections, everything?

If this is reply to my earlier post I said there were at least 3 factors:
  • the listener (age/sensitivity)
  • the setup (location/hookup/etc)
  • the TV.

Any or all of the factors can impact the intensity / annoyance of the buzzing.

I've seen the setup being a factor in at least a few cases:
  • Wall mounting and aiming the center of the TV where a listener is not sitting can make the buzzing non-obvious
  • I saw a few posts where the person only got LOUD buzzing when plugged into a certain outlet in the house and/or routing a certain way thru the receiver.
  • Some people say the Ferrite Core or a certain surge protector have made the buzzing better / worse. (I figure some people do have bad power. I've noticed power surges in my house that cause buzz to come out of the TV speakers. But it was a brief noise.)
  • I'd also include material playing in the setup. I've had certain channels where you can hear a constant or intermittent buzz.

So to do a true comparison between TVs of the same model you would have to remove all the setup factors.

It sounds like you've removed at least the setup factor for your two tests... And since you can hear the noise, the listener... So I would consider yours a good test. (Not too many people have 2 latest model TVs like you I figure. So the statistical sample size is going to be small...)

My point was trying to come up with a fair way to test 2 TVs of the same brand/model since much of the debate here is "do all latest model Samsung TVs buzz?"
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