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Edge Lit LED Long Term STATS

post #1 of 21
Thread Starter 
Hello, anyone have a edge lit LED for 3 years or more? Does the edge flashlighting get worse over time?

THks
post #2 of 21
What do you mean stats? You think anyone is keeping stats on this?
post #3 of 21
I don't think edgelighting has been out that long yet... Maybe two yeas?

Quote:
Originally Posted by omeletpants View Post

What do you mean stats? You think anyone is keeping stats on this?

Well, I'm sure theres nothing official. Just an overview, if anyone has posted. Like DLP lamp life, etc
post #4 of 21
Thread Starter 
All edge lit LED's have flashlighting problems, including the one I just bought. I can live with it now but I wonder what it's going to look like in 5 yrs time?

What I'm getting at is for example they have tested some plasma models and found on the Panasonic line the black levels had turned greyish in under a years time. Just wondering if similar tests done for LED's and the edge lit problems?

Thks
post #5 of 21
After you read THIS THREAD, u maybe compelled to immediately dump your LED.
post #6 of 21
Quote:
Originally Posted by MrBobb View Post

After you read THIS THREAD, u maybe compelled to immediately dump your LED.

I just bought a samsung led-lcd tv. and i cant find any fllash lighting on it.
What does it look like? also its saving me 100 watts of power
post #7 of 21
Quote:
Originally Posted by tootal2 View Post

I just bought a samsung led-lcd tv. and i cant find any fllash lighting on it.
What does it look like? also its saving me 100 watts of power

Trust me, if you had it you would know. Consider yourself very lucky and enjoy your new TV.

By the way, of the thousands of people who buy new TVs each year, very few come to AVS Forum to talk about how good or how bad they are.
post #8 of 21
Quote:
Originally Posted by MrBobb View Post

After you read THIS THREAD, u maybe compelled to immediately dump your LED.

Strange comment. Many people are very happy with their LED tvs.
post #9 of 21
It's not just leds that have that issue so do lcds. Most of the time tvs just need time to get settled, about 100 hours. You can also just adjust settings. For most people issues can simply be fixed, some issues are also just based on a defective tv and other issues are that some people just don't understand the technology and think there tv is defective when it's actually not.
post #10 of 21
Quote:
Originally Posted by texasrattler View Post

It's not just leds that have that issue so do lcds. Most of the time tvs just need time to get settled, about 100 hours. You can also just adjust settings. For most people issues can simply be fixed, some issues are also just based on a defective tv and other issues are that some people just don't understand the technology and think there tv is defective when it's actually not.

Some people believe that plasma TVs benefit from a break-in, but LED/LCD doeesn't require any break-in period.

Where are you getting this 100 hour business
post #11 of 21
I'm not sure where you got your info from but these very forums have said that. Since you've been a member for awhile you of most people should and would have seen that type of info. Whether or not it's true or not is another topic but it has been said in these very forums.

I got this from these very forums from I believe the 40B650 official thread and calibration thread awhile back. I've been in so many threads that I can't be 100% sure though exactly which thread it was in.

I have a Samsung 63" Plasma 3D C8000 and no break in needed for mine. Looks the same as it did on day one.
post #12 of 21
Quote:
Originally Posted by ruadmaa View Post

Strange comment. Many people are very happy with their LED tvs.

So... you are saying, spare the sensitive feelings of LED owners, don't talk about it?

Nobody is saying LEDs are bad, I did not say LEDs are bad, I just invited u to read that thread.

The people at that thread actually did empirical measurement, it's not your usual subjective observations.

If you are happy with your LED, then by all means, go your merry way. Granted, life is not about numbers alone, so if u do decide to read it, u may treat it as non-consequential to real life.
post #13 of 21
Quote:
Originally Posted by MrBobb View Post

So... you are saying, spare the sensitive feelings of LED owners, don't talk about it?

Nobody is saying LEDs are bad, I did not say LEDs are bad, I just invited u to read that thread.

The people at that thread actually did empirical measurement, it's not your usual subjective observations.

If you are happy with your LED, then by all means, go your merry way. Granted, life is not about numbers alone, so if u do decide to read it, u may treat it as non-consequential to real life.

I don't have to read a cereal box to know if I liked the cereal. Your stats mean absolutely nothing to me. I have an LCD tv and love it. Incidentally, I also have a CRT based RPTV. If I were to pick which one I liked best, I would pick the LCD. I'll be glad when the CRT conks out so I can get that huge dinosaur out of my living room.
post #14 of 21
Quote:
Originally Posted by spyboy View Post

Some people believe that plasma TVs benefit from a break-in, but LED/LCD doeesn't require any break-in period.

Where are you getting this 100 hour business

It's generally believed that plasma phosphors do "settle in" over the first 100-200 hours of use, to the effect that they're more prone to image retention or burn-in when new.

I know that in the case of the sets put on display where I work some plasmas do improve a bit after the first week or so on display, but I've never noted any change over the first weeks with lcds or leds, but this is only anecdotal evidence based on my own observations. My ex brother-in-law purchased a new Panasonic 720p 50" plasma in '08, which I helped haul to his home and set up. It looks significantly better today than it did when new, has never had any special break-in procedures except for my initial minor adjustments to the Standard mode when we first set it up, and has no sign of burn in despite no special precautions having been followed when it was new. I think that some of those reporting improvement over time (absent any adjustments having been made to the picture parameters) with LED or LCD are just getting accustomed to their sets.

As for the flashlighting on edge lit leds I would venture to theorize that this is an assembly problem rather than an indication of defective LCD panels. The fact that I can create a severe though small flashlight on mine by squeezing the bezel and the reports by some of improvements by loosening screws at the edges in back or by massaging the screen leads me to this suspicion. Perhaps the diffuser panels are squeezed too tightly against the back of the LCD panels in some areas or are themselves not perfectly made? I'm not willing to blow the warranty on mine by taking it apart and checking this so it's only conjecture on my part.
post #15 of 21
Thread Starter 
Quote:
Originally Posted by tootal2 View Post

I just bought a samsung led-lcd tv. and i cant find any fllash lighting on it.
What does it look like? also its saving me 100 watts of power

What model is it? If it's edge lit LED, you can see hotter brighter areas of light around the edges and with mine I actually can see the LED light bands going horizontal. All this shows up in dark scenes or even light grey or blue scenes. I was watching "DAS BOat" on DVD and when it cut to a sky and ocean scene, there was these horizontal bands of different light. Yes I have dropped back light level etc.

I changed my mind, I actually can't live with it now!!

I didn't notice it at first also as this was my first HDTV. Actually my second. Took back a LG LCD I didn't like.
post #16 of 21
Quote:
Originally Posted by cabletvsucks View Post

What model is it? If it's edge lit LED, you can see hotter brighter areas of light around the edges and with mine I actually can see the LED light bands going horizontal. All this shows up in dark scenes or even grey or blue scenes. I was watching "DAS BOat" on DVD and when it cut to a sky and ocean scene, there was these horizontal bands of different light.

I changed my mind, I actually can't live with it now!!

I didn't notice it at first also as this was my first HDTV. Actually my second. Took back a LG LCD I didn't like.

Many people also took back plasma sets because they didn't like them.
post #17 of 21
Thread Starter 
Quote:
Originally Posted by MrBobb View Post

After you read THIS THREAD, u maybe compelled to immediately dump your LED.

Great thread THANKS. I should have looked first. I will comment on it later.
post #18 of 21
Thread Starter 
Quote:
Originally Posted by ruadmaa View Post

Many people also took back plasma sets because they didn't like them.

You referring to my G20 return That's a whole nother story lol
post #19 of 21
Thread Starter 
I don't like currant models in either technology and just might wait until the 2011's arrive. Should be any day now!!
post #20 of 21
Any edge lighting system (CCFLs or LED) have the issue of getting a ton of light to the center of the display while not blasting the snot out of the sides. They use a light guide that has a pattern on it that diffuses the edges and lights the light out in the center. Uniformity, especially noticable in dimly lit rooms will likely be noticable. Rear lit displays (CCFL or LEDs) are more uniform since the light is going from back to front in a straight line. Edge lit displays have to have the light down down/across the display and then scatter them forward.

LEDs are esspecially ultra-bright sources of a pinpoint amount of light. Seeing them from the side is easy so "headlighting" is always going to be an issue.

As a note, LCD displays and their backlights (CCFL and LED) do not age or settle in a way that requires a break-in period. THe LCD does not change nor will LEDs. Technically, the phosphor in the CCFL will dim down 10% in a few hundred hours but it ages uniformly. This phosphor aging is the same mechanism that plasmas suffer from. Anything that produces light, will produce less light over time and there is a fair steep drop off in the begining.

And to the last guy... buy your set now. There is little that can fix the problems you seem to be having trouble with.
post #21 of 21
Hello,
That Link definitely gives me the willies. After owning an SXRD TV and going through multiple Optical Blocks, I thought by owning an LCD TV there would not be many concerns. I suppose I am grateful Sony refused to give me anything but the KDL-55EX500 as a replacement for my KDS-55A3000 as I tried multiple times to pay more to get a more expensive LED Model.
Cheers,
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