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Sony KDL-32EX650 LED backlight bleeding, is this normal?


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Old 08-01-2013, 22:37
Stilian
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Hi guys, I bought the Sony KDL-32EX650 some time ago and I am very pleased with its performance, great picture quality and plenty of features. However there is something that really annoys me in this TV - bright backlight comes from the top angles when dark blacks on screen. It is quite visible when lights in room are turned off. I've heard about lcd backlight bleeding but I am still wondering if that is the case with my TV and if that is normal for this model.
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Old 09-01-2013, 17:47
Helmut10
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Return the TV to default settings.
Be careful with Black level and Contrast enhancing adjustments. If you don't know what it all means don't mess about with the settings.

On mine there is so much adjustment it is possible to get into a bad position which may enhance something that is at a normally very low level.

There is always a degree of back light bleed, it's really how much rather than anything else.

On mine In a dark room, a completely 'black' screen you can see a very low level of backlight bleed coming from top and bottom edges, and some other stuff if at an angle to the screen. That is expected with a TN LCD panel.
But the level is so low there is no way you can see this on a normal scene.
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Old 09-01-2013, 20:25
Nigel Goodwin
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The 'problem' is watching it in the dark

Try turning the backlight setting down.
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Old 10-01-2013, 09:42
Stilian
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The 'problem' is watching it in the dark

Try turning the backlight setting down.
Actually I reduced the backlight to the medium (5 of 10) but this does not affect the problem. I guess it is the angle of the backlit lamps that is wrong.

Return the TV to default settings.
Be careful with Black level and Contrast enhancing adjustments. If you don't know what it all means don't mess about with the settings.

On mine there is so much adjustment it is possible to get into a bad position which may enhance something that is at a normally very low level.

There is always a degree of back light bleed, it's really how much rather than anything else.
I changed some of the settings (actually lowered most) as it seemed way to bright, though the picture looked good.
The bleeding problem in this TV is not big of a deal, but the picture in all other occasions is so perfect that it somehow spoils the overall impression with this Sony Bravia. I will still try to contact the nearby Sony service center and check with them.
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Old 10-01-2013, 16:19
Nigel Goodwin
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I will still try to contact the nearby Sony service center and check with them.
I'm one

They will tell you the same thing, TV's aren't designed to be watched in the dark.

I'm presuming it's an edge-lit set?, these are probably the most susceptible types - but pretty well all that's available now.
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Old 11-01-2013, 09:52
Stilian
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Are you really?? OK, so you say I better leave it as it is and enjoy it with lights turned on, but that will ruin the great cinema experience. Coke and popcorn wouldn't matter any more
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Old 11-01-2013, 11:34
Nigel Goodwin
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Are you really??
Yes, but by all means contact Sony if you're not happy with it - but you may be charged if you take the set to a Sony Service Centre and they don't find a fault (they can't make a warranty claim to Sony for NFF).
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Old 11-01-2013, 11:40
XxBlaKOuTZxX
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It's a pain in the ass trying to set up a TV for best possible viewing. All the enhancements seem to make the picture worse rather than better. Someone posted a link on here to a site that helps you set up your TV for best viewing but I couldn't remember which thread it was posted in (i'm getting old and forgetful you see) but it has best set up for all different makes. It may help
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Old 13-01-2013, 20:00
Stilian
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Here is what I mean, almost the same bleeding effect from upper corners: Sony Bravia bleeding problem

It is quite obvious on these pics but it is not that bad on my TV, especially if watching on daylight. I think I will accept it as something normal and just get used to it.
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Old 03-07-2013, 00:04
drillbit
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Someone posted a link on here to a site that helps you set up your TV for best viewing but I couldn't remember which thread it was posted in
anyone out there know the name of this site???
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Old 03-07-2013, 01:33
evil c
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AVForums PicturePerfect: http://www.avforums.com/home/pictureperfect.html
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Old 03-07-2013, 17:47
drillbit
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thanks
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Old 03-07-2013, 19:42
Peter the Great
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Here is what I mean, almost the same bleeding effect from upper corners: Sony Bravia bleeding problem

It is quite obvious on these pics but it is not that bad on my TV, especially if watching on daylight. I think I will accept it as something normal and just get used to it.
Edge Lit LED's are a pain to get right. The trick is to have the LED backlighting turned down as low as possible. To do this without making the picture look too dark you have to set contrast at a very high setting sometimes as high as 100!. This may seem like madness but believe me it does work.
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Old 04-07-2013, 00:07
evil c
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I was struggling to set up my picture after I bought my TV and the AVForums pages were a great help. I watch in Movie mode and have all the picture processing aids off except during the day if I'm watching F1 or MotoGP or Wimbledon. Then I'll go into the Advanced Settings sub-menu in Picture and set the Dynamic Contrast to High. If it's a sunny day I'll increase the Backlight as well on the Picture menu sometimes as high as 12 (max is 20).

At night I have the lights on because that's what you're supposed to do with LED backlit displays, with the Dynamic Contrast off and reduced backlighting. The TV has a power use meter and I aim to have that showing near minimal. So the Backlight will be on 6 or 7, Contrast 62 and Brightness 61 with Colour 38. In the early evening I'll probably have the Backlight on 10 and reduce it as the ambient light diminishes until eventually the lights go on.

I leave the Contrast/Brightness/Colour on the same settings all the time except for some live broadcasts or Blurays I sometimes increase the Colour or make minor temporary tweaks.

The trick with white I found after experimentation is to have a creamy white rather than Persil white. On my TV this is best achieved in Movie mode. It doesn't seem right but it looks right.

I do get the backlight bleed and that manifests itself as slight greying in the bottom RH side of the display, but it's only visible when the screen is blank, which it rarely is. I could reduce or eliminate this entirely by using the picture processing aids but the resultant picture, apart from having a uniform black effect when the screen is blank, looks quite artificially revolting and unnatural.
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Old 04-07-2013, 09:05
drillbit
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i followed the step by step guide on the site above but if anything it made my picture worse
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Old 04-07-2013, 09:19
call100
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i followed the step by step guide on the site above but if anything it made my picture worse

The best picture is the one that you find to be the best. Guides are fine and are just that, but, if you don't like the result you need to tweak it for your own preferences.
Some people have horrendous pictures (to me) on their TV's but are quite happy with the results. I know one person who has Dynamic everything on, when I tried to tone it down a bit, they didn't like it at all......You can lead a horse to water.........
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Old 04-07-2013, 09:37
drillbit
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The best picture is the one that you find to be the best.
"beauty is in the eye of the beholder" and all that i suppose
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Old 04-07-2013, 10:11
Nigel Goodwin
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i followed the step by step guide on the site above but if anything it made my picture worse
Quite possible (if not probable?), you're attempting to follow someone else's idea of what THEY like.
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Old 04-07-2013, 10:48
Winston_1
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I was struggling to set up my picture after I bought my TV and the AVForums pages were a great help. I watch in Movie mode and have all the picture processing aids off except during the day if I'm watching F1 or MotoGP or Wimbledon. Then I'll go into the Advanced Settings sub-menu in Picture and set the Dynamic Contrast to High. If it's a sunny day I'll increase the Backlight as well on the Picture menu sometimes as high as 12 (max is 20).

At night I have the lights on because that's what you're supposed to do with LED backlit displays, with the Dynamic Contrast off and reduced backlighting. The TV has a power use meter and I aim to have that showing near minimal. So the Backlight will be on 6 or 7, Contrast 62 and Brightness 61 with Colour 38. In the early evening I'll probably have the Backlight on 10 and reduce it as the ambient light diminishes until eventually the lights go on.

I leave the Contrast/Brightness/Colour on the same settings all the time except for some live broadcasts or Blurays I sometimes increase the Colour or make minor temporary tweaks.

The trick with white I found after experimentation is to have a creamy white rather than Persil white. On my TV this is best achieved in Movie mode. It doesn't seem right but it looks right.

I do get the backlight bleed and that manifests itself as slight greying in the bottom RH side of the display, but it's only visible when the screen is blank, which it rarely is. I could reduce or eliminate this entirely by using the picture processing aids but the resultant picture, apart from having a uniform black effect when the screen is blank, looks quite artificially revolting and unnatural.
Gosh, it seems as if you spend most of the time adjusting the set and no time watching the programmes.
I knew some hi fi buffs like that but had not realised it had spread to TV as well.
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Old 04-07-2013, 23:10
evil c
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Gosh, it seems as if you spend most of the time adjusting the set and no time watching the programmes.
I knew some hi fi buffs like that but had not realised it had spread to TV as well.
Well, it won't be any surprise to you if I say that I am a hi-fi buff, but with the TV I only rarely watch it during the day. I do have to fiddle with the Backlighting though every evening and night.

I would prefer not to have to adjust it at all. My previous FST CRT TV had Contrast, Brightness and Colour adjustments and that was it. After initial setup I left these settings alone.

Not so these days; there's a plethora of picture processing controls each of which has consequences for the others. It's the same with my Full HD laptop screen and equally annoying.

Why I wonder was it that in the analogue broadcasts CRT and VCR days that so little adjustment was necessary and with digital broadcasts LCD and Blu-ray so much adjustment is necessary?
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Old 05-07-2013, 00:31
drillbit
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yep, its getting way too complicated

hd is fine, but for SD broadcasts LCDs/LEDs suck
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Old 08-07-2013, 16:39
adam1516
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I've just bought one of these - Samsung UE55F6800. After initial delight, it's not really until after a few days that you start noticing little glitches - and even a TV as mighty as this one has them.

Rather than backlight bleeding in a darkened room, which I have not noticed at all, the opposite has happened. I see shadowing in all four corners, with the lights on, especially with a light background. It is especially noticeable because of the size of the screen. There's also a problem with audio lag via the HDD USB. So, my TV goes back to Amazon for a replacement, and if that is the same, then that one goes back too for a refund!

I sometimes depair at these LED TVs, because I have not had one ever that has not had a problem. Also, I do not accept that it is 'normal' for an inherant fault to persist with all these TVs. I'm trying to imagine an advert on Amazon saying something like this -

"This stunning 55 inch TV comes complete with backlight bleeding, clouding and shadowing. Don't worry - it's normal!!"
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Old 08-07-2013, 20:58
drillbit
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to be honest with you i've yet to come across a telly that can beat my old philips 28" CRT for all round picture quality

if it was only for HD tranmission i'd probably go back to it
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