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Sony Bravia Making Humming/buzzing Sound


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The fans wont change a thing. They are crappy sleeve ones and they are no different to the ones already in there. The manufacture date is on a sticker on the rear of the tv. My hum did not start until 2 months after i had the tv. See my other post regarding fan drive boards. They are making the noise. These little fans are nothing more than a typical cpu fan hanging off an older cpu. They seem to draw air in from top and push air across the inverter boards on each side of the tv. I have some happy snap pics of the inside if anyone is interested. I can show you exactly where the noise is emitting from

Hi Steve_mac,

I have a 46X3100 (Dec07).

Would appreciate if you could send me the pictures of the internals and the details of what is causing the noise.

I am still awaiting a technician visit.

Many thanks,

Jonesman.

Email: jonesman@netspace.net.au

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Got my Bravia 46 inch X-series 2 days ago, started watching a movie last night and was distracted by the fan noise. This is completely unacceptable for a product of this price range. TV manufacture date is Jan08.

Now that I see others have the same issue I am not happy with placing a warranty call given the TV is brand new. I will be requesting my money back or a unit that does not have this issue. I have sent Sony Australia and email via their website requesting a formal response, and will be talking to the retailer next.

:angry2:

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Im getting mine replaced thursday!!! YAY finally, i hope he can install the firmware thu, apparently they use a sony pro duo card to install it! And yes they need to know what type your panel is (type 1 or type 2) not sure how they determine it though!

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Don't they just update the firmware by sticking a thumb drive in the USB slot?

Nope - the updates are done from a Memory Stick, which gets inserted in the Memory Stick reader slot at the back of the TV (yes, THAT is what's behind the little "Service Only" cover :) )

OK I have a 46x3100 manufactured August 2007 (One of the first)

Firstly i had to see if my tv had a green dot in a specific part of the rear grill as this determined what type of chipset I had.

What I've been told more than once - including by the Sony-appointed tech who looked at mine - is that the dot sticker indicates that the TV had its firmware updated in Australia before being shipped. My sticker is orange by the way.

As mine does not have a green dot and falls in a specific serial number range i also need to get a tuner replacement before the software upgrade can be installed.

A tuner *replacement*? Surely not. Firmware update for the tuner, I would have thought would be more likely.

What was the serial number range quoted to you?

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so it is safe to say that the firmware upgrade has done its job by reducing the amount of buzzing noise the TV produces?

What I've been told more than once - including by the Sony-appointed tech who looked at mine - is that the dot sticker indicates that the TV had its firmware updated in Australia before being shipped. My sticker is orange by the way.

so basically orange means that the firmware has not been updated? where abouts is this "dot sticker" located?

also would someone be able to post up the number i would have to call to talk to a sony technician?

thanks

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so basically orange means that the firmware has not been updated? where abouts is this "dot sticker" located?

I don't think the colour is relevant. The Sony-appointed tech said he expected green but the fact there was a dot sticker there at all meant the firmware had been updated already, something he confirmed anyway by attempting an update.

also would someone be able to post up the number i would have to call to talk to a sony technician?

thanks

Sony doesn't actually have any technicians; you call their support line and if they deem you need a visit, they farm the job out to one of the companies they hire to do the work.

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A couple of weeks ago i was debating getting a technician out or trying the retailer again - i opted for the latter. Fortunately he was very understanding (Sony Central) and has replaced my 46xbr with one that's just arrived in Australia. this one's got manufacture date jan 08 and no sticker on the back BTW. just turned it on and couldn't hear a thing, for the first 6 or 7 seconds, then the dreaded noise started again. I don't think I can go back to the retailer for a third time, after all, it's not his fault there's a bunch of crappy tvs he's been provided with, so I'll try putting in a call to Sony and getting a technician out.

I can't believe a supposedly premium tv has these problems at all and i'm p1ssed off that none of the reviews i saw on various websites noted this issue. I wish now i'd been a complete n00b and done no research into the supposedly "best" lcd out there - a cheaper samsung or similar brand not only would've saved me a couple of thousand bucks but would've saved me all these headaches.

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Has anyone else had the firmware upgrade done? Any feedback?

I am going to wait until this is done and then make the decision if I will keep it or not.

Besides the Kuro there is nothing else on the market that I want. The 52 inch would be nice but I dont want to spend another $2000 for a slightly bigger TV.

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For lack of better words, this is crap.

Seems like there is no fix for this problem. How can that be? This is a premium TV. If the 52x wasn't an extra $2,000, I'd be demanding this be returned and getting that one.

I'm still thinking about demanding money back or something and getting a different LCD but I do really like the Sony.

Is it pretty much confirmed that a tech can't fix anything? Whether they replace the fans or upgrade the firmware? Are we stuck with this problem?

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The original Bravias 2006 had fans.,,.,, people complained.

The digital 2007 models had no fans, no one complained.

The 2007-08 models all have fans. People like yourself have complained. It's not a fault but the basic cooling technology used for LCD

When people see any TV in a show room it's invariably noisy and the set is turned up LOUD.

On the HD ready TV's like the V3100 series the fan is on full always.

I haven't noticed the X series because I own a x2000 series and it has no fan.

Circuit boards strapped to a hot LCD panel are going to be hot. Like some PC owners there are Mods that have been done to reduce the fan noise.

When I get a x3100 or XBR series to play with I will see what can be done.

BTW If you try to disconnect it - the fan fail circuit cuts the powersupply.

I noticed a Bravia shut down at 42C ambient temperature during our minor heat wave last month. internal temp sensor said 61

>generally the outside ambient temp is 23C and the internal temp sensor is 36C

> a note : coloured dots stuck to your 3100 series model number stciker indicate that a firmware update was done for Australian only TV sound transmission conditions, but nothing to do with the fan noise.

Edited by hideous62
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I just checked my TV and it is an August 2007 one.

If anyone else has a Jan 2008 one, I'd like to know if the buzz is there because I'll return this if it looks like the problem was fixed in the later models.

Interested to hear how the fan replacement goes though too.

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I am supposed to get the technician come in on Friday and install the replacement fans. However, the girl from the warranty service company has not even the slightest technical idea or willingness to understand what she is talking about. The sad impression I got from her is that the replacement fans are exactly the same as the original ones.

Meantime, a friend's cousing bought the 46" Samsung TV which has an LCD panel made in the joint factory with Sony - almost identical to the one in Bravia series. Yes the Samsung is presumably using the fans to cool the LCD panel.

Yet the Samsung is not making any noise. I repeat, the Samsung does not make fan noise.

Therefore, it is not a good excuse to blame the technology of the TV. If Samsung can be quiet, so can the Sony.

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We all know that it is the fan causing the noise, so it is sonys fault for not inspecting the quality of the fans before installing them into the tvs, or for not choosing a better fan that does not make much noise!!! I will keep you all posted, and i will take note of the new fans and the old fans to see if they are of different design!

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We all know that it is the fan causing the noise, so it is sonys fault for not inspecting the quality of the fans before installing them into the tvs, or for not choosing a better fan that does not make much noise!!! I will keep you all posted, and i will take note of the new fans and the old fans to see if they are of different design!

>> all the 3100 series Bravia's have fans.

The fans will be probably be the same make and model, like all mechanical devices some are noiser than others.

I don't expect you will notice any difference.

Fan noise is normal, some people think TV's are suppose to be quiet like old Tube TV's which frankly are loud and noisey in my ears - the technology of the 3100 series is that it has fan noise.

Most fans being replaced have nothing wrong with them. I measured the noise of one fan, replaced it < same level > the customer was happy it was quieter ( it was not ) . Be happy you don't have a 3 fanned Sony plasma.. my fillings hurt on that one.

I don't like the whine of my wife when i buy things, but she is in spec too.

There are other types of fans, slower speed, more blades etc but they are trial only.

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Is it true that Jan and later models don't have this noise because if they don't, I'm going to call Sony/retailer and demand a new x3100.

my 46X is manufactured in Jan08 and has the buzz noise, and it seems to get louder the longer i leave the tv on too :wacko:

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>> all the 3100 series Bravia's have fans.

The fans will be probably be the same make and model, like all mechanical devices some are noiser than others.

I don't expect you will notice any difference.

Fan noise is normal, some people think TV's are suppose to be quiet like old Tube TV's which frankly are loud and noisey in my ears - the technology of the 3100 series is that it has fan noise.

Most fans being replaced have nothing wrong with them. I measured the noise of one fan, replaced it < same level > the customer was happy it was quieter ( it was not ) . Be happy you don't have a 3 fanned Sony plasma.. my fillings hurt on that one.

I don't like the whine of my wife when i buy things, but she is in spec too.

There are other types of fans, slower speed, more blades etc but they are trial only.

I have a 40w3100 and if it has fans I cannot hear them (even with my ear againest the side of the tv).

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