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Sony Bravia Making Humming/buzzing Sound


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Hey, I have got the firmware up date. and yes i believe it does slow the fan down. which makes it quieter, but still loud enough to be annoying. I barely hear them now. but when i do (between ads and quiet parts) it makes me really angry because of the price we all paid for this TV you would assume it would have no manufacturing defects.

I would love to hear how the new fans go?

to find out if it is worth putting then in. as last time , when i had the firmware upgrade it took 2 months to get the TV back.

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Hey, I have got the firmware up date. and yes i believe it does slow the fan down. which makes it quieter, but still loud enough to be annoying. I barely hear them now. but when i do (between ads and quiet parts) it makes me really angry because of the price we all paid for this TV you would assume it would have no manufacturing defects.

I would love to hear how the new fans go?

to find out if it is worth putting then in. as last time , when i had the firmware upgrade it took 2 months to get the TV back.

Demand a replacement with a new model which I can stand by does not have this buzzing issue (January 2008 Manufacture Date).

You have paid a premium price and expect a premium product, clearly this is not good enough and a firmware update to slow the fans is not a fix, it's a band aid and how do we know if the slower fans with less cooling ability will do the proper job to keep the TV working correctly for many years after the warranty is done??

Edited by GEoMaNTiK
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To be honest, I thought that small buzzing sound was normal. I'd put my ear near the back of the TV and I'd hear a slight buzzing. I thought that is fine for a 46 inch screen, etc.

My concern was the fan. Like you said, approx 3-5 seconds after the TV is on, it just starts humming. This never happened before and I went into Sony Central today and went down the back (where it was quiet and the TV was on mute) to a 46 inch X series and put my ear to the back of it and I couldn't hear any buzzing of the fan.

Makes me wonder if these sets are now faulty because mine never had the fans running from the start and this 46 inch instore didn't have it.

I have a similar issue:

A new (December 2007 manufactured) 46X3100 arrived two days ago. (It was a warranty replacement for a previous unit that had a backlight issue)

Was pleased that the backlight issue and blacks are much improved - however - I now have a Fan noise issue.

On startup:

I also have the slight buzzing sound (electronics / transformer ?) that exists, which can only be heard at approx 1m or less. (ie not so concerning)

However,

similar to donkey33, after approx 5 secs after the TV is on, the fan starts up and keeps humming. This is very audible and completely unacceptable.

The Fan noise is audible up to 10m away into another room and the sound volume has to be at > = 13 to cover the noise when viewing from 4m.

Thus during quiet scenes in a movie it is distracting.

I am reasonably certain that it is the Fan as you can hear it spin up (almost an inrush current effect) and then stabilise.

Interestingly, my folks have an Oct07 46X3100 which has the slight buzzing - BUT - NO excessive fan noise (ie nothing audible over 1.5m away)

THUS

AGREE - this type of issue is definitely a FAULT.

REQUEST:

Could those that have had fan's replaced, definitely please advise of their experience / progress / success......??

I will be following up with Sony Warranty team on Mon.

I have created a summary list from this topic that we can continue to update:

46X3100 et al - Excessive Noise Summary & resolution progress:

DTV Member:...... Model:........ Manuf Date:... Noise Level:......... Source:.......... Audible Distance:... Warranty Claim / Progress:

Donkey33........... 46X3100...... ?................. unacceptable......... Fan Hum........ Up.to.3m................ ?

drazman2000...... 40XBR......... ?................. unacceptable......... Fan Hum........ >=3m...................... Tech has checked and ordered new quieter fans

shudint............... 46X3100...... ?................. unacceptable......... Elec Buzz......... ?............................ Harvey Norman will replace if faulty

songaz............... Bravia?......... ?.................. ?........................... ?.................... <2.5m.................... ?

neonkitten.......... 40X3100...... ?.................. OK......................... None.............. silent (<1m)............ N/A

alanh................. 46X3100....... ?.................. OK......................... None.............. silent..................... N/A

drurus............... 46X3100........ Oct07?........ unacceptable........ Fan Hum......... ?............................ Has Firmware update (slows fans) still audible - ongoing

GEoMaNTiK........ 46X3100........ Jan08......... OK.......................... None............... silent (<2m)............ N/A

johnmiceter....... 46X3100........ Jan08??...... OK......................... None............... silent...................... N/A

ag1................... 40X................ Dec07.......... unacceptable........ Fan Hum......... >2m........................ Likely to pursue new quieter fans

Jonesman.......... 46X3100....... Dec07.......... unacceptable........ Fan Hum.......... >8m....................... Will definitely pursue new quieter fans or replacement

JonesmansFolks. 46X3100..... Sep07.......... OK.......................... None............... silent(<1m)............ N/A

Apologies for any errors in the above collation - Pls feel free to correct and add as appropriate.

Better info regarding our experiences will assist others to assess if they have an unreasonable issue such as this.

Thanks in advance.

Edited by Jonesman
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Demand a replacement with a new model which I can stand by does not have this buzzing issue (January 2008 Manufacture Date).

my 46X was manufactured in Jan 08, but i still have a buzz noise.

for the people who have gotten their fan replaced, did you have to take your tv into warranty? or did technicians come to your house to fix it?

i dont want to have to repack my tv just to get my fans fixed <_<

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I have created a summary list from this topic that we can continue to update:

46X3100 et al - Excessive Noise Summary & resolution progress:

DTV Member:...... Model:........ Manuf Date:... Noise Level:......... Source:.......... Audible Distance:... Warranty Claim / Progress:

neonkitten.......... 40X3100...... ?.................. OK......................... None.............. silent (<1m)............ N/A

Filling in the blanks for me:

Manufacturing date of my 40X3100 is August 2007 (Japan) - probably one of the first 3100-series TVs produced. Still no audible fan noise and no buzzing.

I wonder whether this buzzing some are reporting is due to the use of different LCD panels. I recall (vaguely!) reading reports that Sony/Samsung's panel production was not meeting demand and that they were contracting another company to produce extra panels for them.

The electrical buzzing would, I'd suggest, be most likely to be coming from the backlight.

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You can add me to the list.

Mine is a KDL46XBR. Bought about 3 weeks ago, manufactured November 2007.

The humming noise really annoys me. I noticed that it gets louder only when the TV had been working for about 1 hour (presumably the TV gets warmer).

Its especially noticeable during quieter scenes, in the mornings or evenings when surroundings are quiet. At worst, I can hear it from 5m away. Particularly the noise gets obvious when the TV is on mute.

I can tell that the noise is coming from behind the screen, somewhere in the top left (when facing the screen).

Lodged awarranty claim with Sony, waiting for technician to contact me.

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I can tell that the noise is coming from behind the screen, somewhere in the top left (when facing the screen).

The top left is where the fan is located.

It's really starting to sound like a seriously crap batch of fans started going into these TVs at some point. And when I say crap, I'm talking Intel stock CPU fan crap :)

The fan noise from my Bravia, (even in hot, humid conditions like last night, when my PC's CPU fan was going off like a jet engine simply by opening a web page) is only audible in dead silence, and only if you're right up next to the TV.

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After purchasing the 46X then reading this, I was worried that my display would hum/buz.

Received my TV on the 26/1/08 and it started the noise 2 nights ago. Contacted the retailer I purchased from and he is calling Sony for me. Will advise how I go.

Would a TV that is not even 2 weeks old be replaced or do Sony have to come out and inspect? I expect they would??

Damn am I pissed I did not buy the Kuro... :angry2:

Edited by SRS13
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After purchasing the 46X then reading this, I was worried that my display would hum/buz.

Received my TV on the 26/1/08 and it started the noise 2 nights ago. Contacted the retailer I purchased from and he is calling Sony for me. Will advise how I go.

Would a TV that is not even 2 weeks old be replaced or do Sony have to come out and inspect? I expect they would??

Damn am I pissed I did not buy the Kuro... :angry2:

I have exactly the same problem as has been discussed many times in these pages - unwelcome buzzing sounds when the volume is low/muted or at quiet parts of programmes/movies. (40inch XBR)

This is completely unacceptable for any Sony Bravia.

I purposefully bought a Sony and not one of the cheaper manufacturers to avoid this kind of thing and yet less than a week after having accepted delivery I want to send it back and get a Pioneer.

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Could everyone having this issue look at the label on the back and give us a manufacturing date and country of manufacture? It would be helpful to everyone if a time frame of manufacture and factory could be attached to this one.

FWIW, my August '07 made 40x3100 is still just fine. Maybe getting ripped off to the tune of $1500 by missing out by a mere 8 weeks on a price drop and a free PS3 was worth it after all ;)

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My 46XBR fan starts up audibly about 10 seconds after powering on, too. I rang Sony Service two weeks ago (a day after I bought it), I asked them if this was a known problem and they said "yes". 3rd party service technician came out a week later and said, "yes, it's the fan" (duh), that it probably had noisy fan brushes (whatever that means) and that they would order in a different fan part which would take about 4 days to arrive. 10 days have gone by and no contact from them, will follow up tomorrow. The fan noise is quite audible from my sofa and the other half walks out in disgust during dialogue-driven programmes.

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i Just called sony and they said that the expect the fans to arrive next week.... ( i doubt it)... Also i asked whether they fix it onsite and they said yes so just have to play the waiting game! BUT i hope it fixes the problem! because it is a great TV!

Edited by drazman2000
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i Just called sony and they said that the expect the fans to arrive next week.... ( i doubt it)... Also i asked whether they fix it onsite and they said yes so just have to play the waiting game! BUT i hope it fixes the problem! because it is a great TV!

G'day Drazman

Do you live in the country or the city ? I've got the same prob with our 46x3100 purchased 31/12/07 with a manu date of Aug 07 in Japan. We live about 200km away from Perth..... will they travel that far ???

Cheers

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Has anyone in Perth made contact with a sony repair dude about the excessive humming sound ? I would like to have a point of contact with someone who is aware of the issue before talking to them.... Bloody annoying for a 4k TV... 46x3100

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My 46XBR fan starts up audibly about 10 seconds after powering on, too. I rang Sony Service two weeks ago (a day after I bought it), I asked them if this was a known problem and they said "yes". 3rd party service technician came out a week later and said, "yes, it's the fan" (duh), that it probably had noisy fan brushes (whatever that means)

They're talking about the motor that drives the fan:

http://en.wikipedia.org/wiki/Brushless_DC_electric_motor

I'm VERY surprised they wouldn't use brushless fan motors in a product like this.

My 46XBR build date September 07 has no audible fan noise, but is being returned for flashlight issue.

How bad was your flashlight issue? My Aug 2007 40X has mild flashlighting in the top right corner, though it's not so obnoxious that it intrudes 99% of the time.

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How bad was your flashlight issue? My Aug 2007 40X has mild flashlighting in the top right corner, though it's not so obnoxious that it intrudes 99% of the time.

With settings Backlight 3, Picture 76, Brightness 48, Power Saving Low, the backlight bleed was noticeable in dark movie scenes. There was bleeding in all corners and another area half way down the left side which was brighter than the rest.

Have set up the new tv. December 07 build. Has some clouding but at my settings it's not noticeable. No dead/stuck pixels, and hopefully no noisy fans. Fingers crossed.

Still love this tv though :rolleyes:

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With settings Backlight 3, Picture 76, Brightness 48, Power Saving Low, the backlight bleed was noticeable in dark movie scenes. There was bleeding in all corners and another area half way down the left side which was brighter than the rest.

Have set up the new tv. December 07 build. Has some clouding but at my settings it's not noticeable. No dead/stuck pixels, and hopefully no noisy fans. Fingers crossed.

Still love this tv though :rolleyes:

Heyskip, how easy was it to return your TV ?? Did Sony travel out to your home, inspect and give the go ahead for a new TV or did you have to take it to them and plead your case ??

I have excessive fan/whirring noise and bleeding from corners from some sources..... Aug 07 46x3100

Cheers

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Heyskip, how easy was it to return your TV ?? Did Sony travel out to your home, inspect and give the go ahead for a new TV or did you have to take it to them and plead your case ??

I have excessive fan/whirring noise and bleeding from corners from some sources..... Aug 07 46x3100

Cheers

I took the matter up with the retailer ~16 days after purchase, didn't contact Sony at all. I handled it this way because I knew for a fact that Sony doesn't recognise uneven backlighting as a fault. The whole process was relatively pain free, but I think this would depend on the retailer.

Good luck with your tv tjmckay. Don't accept no for an answer. I know that if my tv develops a buzz/whirring noise it'll definately be going back.

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Its hard to take it back to the retail for buzzing noise because i tried, and they are said "I can't hear a thing"! I was like yeah because of all the background noise! Then he said that if it was loud enough i should be able to hear it! I was like stuff it just took it back home and got sony out! Much less headaches, but i do recommend that if you are taking it back to the retail for noises, make sure they test it in a relatively quite area!

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Its hard to take it back to the retail for buzzing noise because i tried, and they are said "I can't hear a thing"! I was like yeah because of all the background noise! Then he said that if it was loud enough i should be able to hear it! I was like stuff it just took it back home and got sony out! Much less headaches, but i do recommend that if you are taking it back to the retail for noises, make sure they test it in a relatively quite area!

Cheers Fella's

Drazman, do you live in the city or country ? So they just replaced the fans whilst you were there at home ? Take long ? I've just gotta be careful about getting a sony repairer 200kms out from Perth.... Gotta make sure that it's an actual fault, otherwise they'll charge me my left n&t....

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So does anyone actually got it fixed by sony? How much better than before the fix? I am still wondering whether I should contact sony for a fix or just live with it ..........the humming sound is more noticeable at night with quiet environment and volume sound under 17 or during some silent scene.............btw, what's Sony phone no. for service enquiry? Thanks !

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Sony's number is 1300 133 995.

The customer service so far has been quite good. Contact was made an hour after the salesman raised the issue. He referred it onto the repairs department and they contacted me the next morning. The repair guy is coming out next Friday, could have been Wednesday but noone would be home.

Will let you know what they say/do.

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I'm so glad I found this thread, I thought I was going crazy with the noise my 46XBR has been making.

It's definitely the fan and it kicks in after 5 seconds of powering up and is very noticeable when watching the tv in the evening with no outside noise interference. I can easily hear it from 3 - 4m away.

This is the third XBR that I've experienced this same noise with - I previously owned a 40" model which was noisy, took that back to Sony Central and compared side by side (in a relatively quiet room out the back) to another 40" to find that too was noisy. So I put it down to the 40" model being susceptible to a loud fan noise. As such, I upgraded to a 46 XBR only to find that has exactly the same problem. Each unit that I owned would've been the first batch to come to Tassie, so I guess that makes them a Nov 07 model.

The retailer has been very helpful thus far but might start getting fed up with me taking back tvs, especially when it's pretty hard to hear the fans in a noisy shop. From the sounds of it it might be worth calling a Sony technician but I'll keep an eye on this thread to see if others find this to be a suitable resolution.

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O.K NOW LETS GET SOMETHING STRAIGHT, I TOO HAVE BEEN EXPERIENCING THE HUMMING/WHIRRING SOUND FROM THE BACK OF MY BRAND NEW SONY BRAVIA XBR40 WHICH JUST 3 WEEKS OLD.

SO I CALLED SONY TECH SUPPORT TODAY AND THE GUY TELLS ME THAT THERE IS AN EXPLANATION IN THE BACK OF THE INSTRUCTION MANUAL THAT THE WHIRRING SOUND MADE BY THE COOLING FANS IS NOT A FAULT, WELL IF I WAS AWARE OF THIS BEFORE I BOUGHT THE TELEVISION I WOULD HAVE DEFINATELY BOUGHT A DIFFERENT BRAND.

**WHAT USE IS THERE LISTING THIS IN THE INSTRUCTION MANUAL IF YOU ONLY GET AN INSTRUCTION MANUAL ONCE YOU HAVE BOUGHT THE TELEVISION**

THIS SHOULD BE LISTED ON THE DISPLAY NEXT TO THE TV IN-STORE ALONG WITH THE REST OF THE TV'S FEATURES IS THIS IS NOT A 'MALFUNCTION'!

I AM VERY ANNOYED AND CAN THIS PROBLEM BE FIXED AND HAS ANYONE HAD THEIR NOISY FAN PROBLEM FIXED?

THE BUILD DATE AND COUNTRY ARE AS FOLLOWS: SEPTEMBER 2007 JAPAN

EVENTHOUGH IT IS A LOW SOUND AND CAN ONLY BE HEARD WHEN THE VOLUME IS LOW OR IN A SILENT ENVIRONMENT YOU DON'T PAY $3000+ FOR A TV TO MAKE ABNORMAL NOISE

THIS IS A RORT PEOPLE!, WHOEVER ELSE IS EXPERIENCING THIS PROBLEM PLEASE REPLY AND LET'S STAND UP AND FIGHT THESE COPORATE GIANTS BECAUSE ITS US CONSUMERS WHO MAKE THEM BIG!

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O.K NOW LETS GET SOMETHING STRAIGHT, I TOO HAVE BEEN EXPERIENCING THE HUMMING/WHIRRING SOUND FROM THE BACK OF MY BRAND NEW SONY BRAVIA XBR40 WHICH JUST 3 WEEKS OLD.

SO I CALLED SONY TECH SUPPORT TODAY AND THE GUY TELLS ME THAT THERE IS AN EXPLANATION IN THE BACK OF THE INSTRUCTION MANUAL THAT THE WHIRRING SOUND MADE BY THE COOLING FANS IS NOT A FAULT, WELL IF I WAS AWARE OF THIS BEFORE I BOUGHT THE TELEVISION I WOULD HAVE DEFINATELY BOUGHT A DIFFERENT BRAND.

**WHAT USE IS THERE LISTING THIS IN THE INSTRUCTION MANUAL IF YOU ONLY GET AN INSTRUCTION MANUAL ONCE YOU HAVE BOUGHT THE TELEVISION**

THIS SHOULD BE LISTED ON THE DISPLAY NEXT TO THE TV IN-STORE ALONG WITH THE REST OF THE TV'S FEATURES IS THIS IS NOT A 'MALFUNCTION'!

I AM VERY ANNOYED AND CAN THIS PROBLEM BE FIXED AND HAS ANYONE HAD THEIR NOISY FAN PROBLEM FIXED?

THE BUILD DATE AND COUNTRY ARE AS FOLLOWS: SEPTEMBER 2007 JAPAN

EVENTHOUGH IT IS A LOW SOUND AND CAN ONLY BE HEARD WHEN THE VOLUME IS LOW OR IN A SILENT ENVIRONMENT YOU DON'T PAY $3000+ FOR A TV TO MAKE ABNORMAL NOISE

THIS IS A RORT PEOPLE!, WHOEVER ELSE IS EXPERIENCING THIS PROBLEM PLEASE REPLY AND LET'S STAND UP AND FIGHT THESE COPORATE GIANTS BECAUSE ITS US CONSUMERS WHO MAKE THEM BIG!

Your fkn joking - just read the instruction manual and it is right there :angry:

Under Trouble shooting on pg 46 it states 'There is a whirring sound - this is the sound of internal fans of the TV (except for KDL-52XBR/52X3100). This is not a malfunction"

Now I dont give a toss if it says it in the manual or not, they can stick that clause up their backsides. The Sony technician is coming out on Friday and whilst I want to wait and hear what they say, I may call the place I purchased from and demand a refund and get them to take it up with Sony.

Edited by SRS13
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sorry songaz, I edited my post as I am not interested in having fans replaced anymore.

For everyone else, I originally asked what fans they would they use if they were replacing the old ones and how long would they last.

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I've have had the same problem and am currently on my second set. The local service company has just called to say that there is a software upgrade available and that it will reduce the noise but may not eliminate it. It's booked in for next Wednesday - will keep you posted.

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The Sony technician came in today to examine my Bravia XBR 46". I had all windows closed, and even switched off my PC to make environment quiet. Then we put the TV on mute.

Well, he said noise level would be deemed unacceptable to normal use if you can hear it from about 3m+ away. My room only allowed me to stand 8m away, and so I could demonstrate to him that I can easily hear it from 8m+ away.

We both agreed its way way noisy. He did some diagnostics and its 100% confirmed that noise is due to fan, and nothing else. He confirmed it finally by switching the fan off and on, and you could in fact hear the fan start a bit like a motorbike.

The outcome is that they promised to replace the fan(s), which they should get within about 3 days. I hope the replacement fans are a different design.

Did anybody have their fans replaced already? Did it solve the problem ?

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Hi

i just called sonys repair centre and asked where are my #$@# fans!!! It has been 2 weeks since the technition came out to have a look... Now she told me it will be here next week (21st) as they are coming from Singapore!!! I was told last week they will be here this week!!! I bet you that they will not receive it for another month! Anyway i asked whether they are new design fans or just the old ones and she said that they are new design so they should be less noisy! Also about the firmware upgrade apprently it is available and the technition will upgrade it if necessary! So i guess i will update on the results next week some time when the fans actually come in!

Thanks

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The technician came out today, I was not home but my wife called me as soon as he arrived.

He said the noise is not that bad - I told to pull his ears out of his arse... well not exactly but I politely disagreed. He told me that Sony have a software upgrade for the fan noise. He also said that Sony acknowledge a fault with the fans as there have been many complaints from customers. When I confirmed if Sony know there is a fault, he said 'yes that is why they have brought out a software upgrade'

Well that was all I needed to hear. I told him to load the software anyway. It didnt work and he has to come out next week.

NOT ONCE DID HE MENTION CHANGING THE FANS.

With that info I called the place I purchased from and told them I want to return the item as it is faulty and Sony have acknowledged fault. He is organising a return on Monday.

I got home and I **** you not, the noise is actually worse. This is not my imagination as now with the volume on 17 I could just hear from it 3 mtrs away.

As great as this TV is PQ wise, there IS NO WAY I could live with it, reduced noise or not. Nothing worse then thinking the noise may come again.

I'll be glad once its gone but will miss the free playstation though...

Edited by SRS13
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Replacing the fan means he will put the exact same fan in, which may mean the exact same noise? How do any of us know if the knew fan will work.

The worst part about it is after watching Die Hard 4.0 on Blu ray, the picture looked fantastic. Enough to make me think twice on what I do, which really is frustrating.

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