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What is burn-in look like?

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Old 10-22-2004, 07:41 AM   #1
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Default What is burn-in look like?

I was told that some stations has logo could cause burn-in problem to RPTV. I am having a Sony RPTV for about 2 months. Recently, keep watching CNN for the election, they have a red logo at left bottom corner. I am not sure it has caused burn-in already. What does burn-in look like? What is the real cause of burn-in? I think, the RP tube is similar to normal CRT, just more brighter. My computer moniter is always on 24/7, and normally I am not using screen saver. The static image could last many hours, why I don't see burn-in?

..yanbo
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Old 10-22-2004, 12:22 PM   #2
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Burn-in is a condition where you see a "ghost" outline of an image, even when that image is not actually on the screen.

In other words, you would vaguely see the CNN logo on your screen, even when you were tuned to another channel.

Burn-in is caused essentially by uneven wear of the elements that produce your picture. When you have a static picture on your screen, these elements will age unevenly. This unevenness in brightness is what you see as burn-in.

This is not too dissimilar from what happens to a wall behind a picture in a bright room. When you move the picture, you find that paint behind it is a different color, because the area of the wall that was not covered by the picture has faded due to exposure to the sun.

BTW, not all TV's suffer from burn-in. Certain technologies (LCD, DLP) do not suffer from this condition.
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Old 10-22-2004, 01:28 PM   #3
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For the CRT RPTV, if it is burn-in, is it on the CRT or the front plastic panel? Can I see the "ghost" when I shut off the TV?

If it is on the CRT, why I cannot see the burn-in on my PC monitor, which static picture is showing for long period of time?

Thanks,
..yanbo
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Old 10-24-2004, 11:33 AM   #4
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When ever I change my channels I sometimes see the faces still there "ghost" as it changes to the next channel but I only see the ghost as I change the channel is this normal? once I change to another channel its gone
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Old 10-25-2004, 01:36 PM   #5
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Strange, very few response. Is this because we all know or we all don't know?

Maybe, I am too new for these technologies.

..yanbo
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Old 10-25-2004, 03:14 PM   #6
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Quote:
Originally Posted by ybzhou
Strange, very few response. Is this because we all know or we all don't know?

Maybe, I am too new for these technologies.

..yanbo
I have never experienced burn-ins so I really don't know what they look like.
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Old 10-26-2004, 12:42 AM   #7
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If you want to see what bad burn-in looks like go to a videogame arcade and check out the older machines.
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Old 10-26-2004, 02:42 PM   #8
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Quote:
Originally Posted by ybzhou
If it is on the CRT, why I cannot see the burn-in on my PC monitor, which static picture is showing for long period of time?
Older computer monitors did suffer from burn-in. That's the reason screen savers were invented. Newer computers do not have this problem, so screen savers are a novelty now, rather than a necessity.

Technically I am not sure what was changed to eliminate the problem.
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Old 10-26-2004, 02:58 PM   #9
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Quote:
Originally Posted by ybzhou
For the CRT RPTV, if it is burn-in, is it on the CRT or the front plastic panel? Can I see the "ghost" when I shut off the TV?

If it is on the CRT, why I cannot see the burn-in on my PC monitor, which static picture is showing for long period of time?

Thanks,
..yanbo

A burn in is an outlined image that remains on your screeon when a static picture is stationary too long. This "ghost image" is burned onto your RP HDTV screen, not the CRT! This can be avoided by not watching the same channel for hours at a time that has a logo on it such as "CNN"!
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Old 10-27-2004, 07:22 AM   #10
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Quote:
Originally Posted by dachay2tnr
Older computer monitors did suffer from burn-in. That's the reason screen savers were invented. Newer computers do not have this problem, so screen savers are a novelty now, rather than a necessity.

Technically I am not sure what was changed to eliminate the problem.
Thanks for the thoughts. But, I am not sure the screen saver is more for privacy or burn-in. As I remenber, way back to DOS and Windows 3.xx days, we didn't have any screen saver, did we?

The other thing I am not sure too. Back to old DOS and VT100 terminal days, most of the case, the command lines were not long enough to fill up the whole width of screen. I don't remember that I have ever seen left side had burn-in problem.

Old days, new monitor does show brighter letters than old one. That's the aging problem of CRT. I think everyone can accept this nature of fact.

..yanbo
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Old 10-27-2004, 07:42 AM   #11
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Quote:
Originally Posted by Smthkd
A burn in is an outlined image that remains on your screeon when a static picture is stationary too long. This "ghost image" is burned onto your RP HDTV screen, not the CRT! This can be avoided by not watching the same channel for hours at a time that has a logo on it such as "CNN"!
Thanks for the information. In this case, do you mean that I should be able to seen the "ghost" image even the TV is shut off?

I can understand and agree that the plastic panel is more easier to be burn-in than the CRT. But, as a customer, only having several hours to be able to generate some foot prints on my screen, is still not acceptable. This doesn't sound like a mature technology, does it?

But, I am still wondering the CRT RPTV has been in the market for at least 10 years, I mean WRT mass products, there are not so many complains, why? In this thread, not so many people has seen the real burn-in by own eyes, why?

Is the burn-in a real concern? Who came up the time of just "hours" initially? Or, we may have taken care of our own TV too well to cause the burn-in. Of cause, no one wants to risk your own TV for the tests. But, would be a good idea to get to know the root?

Welcome everybody to through out ideas and information. That's the forum for, right?

..yanbo
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