Quote:
Originally posted by SerhC
Is burn in a real problem and is it eliminated by going with the Panny?
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Burn in is not a realistic expectation or problem. Don't let it be the deciding factor... the myth of burn in is very over exaggerated on these forums.
Burn in usually takes weeks or months.... Not hours.
Most people are ignorant of what burn in really is and why it happens; Burn in is nothing more than uneven wearing of the phosphors on the CRT face plate.
If- for example- You were to leave that black and white on screen menu up for a long period of time. (say a week or two) the areas of the white lines from the On Screen Menu would wear faster than the areas of the black screen. So- When you watched somthing else, where that white lines were would be a different level of brightness than other parts of the screen and you would be able to see the "burn in" in that area.
Now- If you were to play that same DVD on screen menu for 1 hour a day constant followed by 12 hours of normal viewing.... you could repeat this over and over and over again for 12-36 months without burn in.
Because.... the CRT would more evenly wear out.
As long as the image changes color and brightness intensity once in a while, the CRT will wear at a more even rate and burn in is not a problem.
I manage a large consumer electronics store; On one Hitachi we used a DVD player with Monster INC. DVD as a demo. This demo started the day Monster INC was realeased (like a year ago) and the TV runs from 8am-10pm everyday except Thanksgiving and Christmas. When the movie is done playing it always returns to the DVD MENU screen, which is black background with white letters and some icons and colors. The DVD would return to this menu many times (more than 6 times) a day. Often it would be as long as an hour or two before someone would notice it and hit the "PLAY" button again.
One year later- This very same RTPV still does not have a hint of "BURN IN" and I can honestly say the TV is beat to crap, driven on 100% contrast for 12 months on a showroom floor, and except for a few individual cases had only *1* DVD movie playing on it for the whole time.
The reason (my theory) why no burn had occured in this very high stress application is becuase as long as the tv was displaying changing pictures periodically, the CRT phoshors wear down at a more similar rate and THUS- NO BURN IN.
Burn in will not happen in an hour or two. It will happen over a period of months. If somone was to watch CNBC for 1 hour everday, but also watched a few hours of non-CNBC... that logo probably won't burn in any time soon. If someone was to watch 3-5 hours of CNBC then shut off the TV and repeat that the very next day..... over and over... then BURN IN will occur.
As long as the CRT's are given proper ability to wear evenly.. then burn in will not occur.
For somone who watched 3 hours a Day of CNBC with the logo tickers ont he bottom..... they would want to run the tv an addition couple hours on somthing else... perhaps even just a screen of white noise. This would allow the CRT's to wear more evenly and slow or stop the burn in process.
CRT displays are designed and expected to wear out. A typical Bigscreen CRT should only last about 8 years of normal use before the CRT become too dim and time to replace. They are quite reliable... and most people are more than satisfied with the expected 8 year life span. (given the cost)
