[VOOM] Burn-in on HDTVs

[SteveJS]

I'm a Voom subscriber and really like the high-quality of the high-
def channels, though I've had a ton of problems getting local
stations. I think I'm just going to get the locals through cable and
not even try any longer to get them through the antenna.

Since I'm pretty new to the world of HDTV, I'm wondering if any of
you can give me some advice on a "burning" question of mine. I've
been told that HDTVs (rear projection) can have a problem with burn-
in of screen images if a stationary image is left on the screen for
too long. Can anyone tell me if I need to be concerned about those
channel identifier logos that appear in the bottom right of the
screen on many stations? Can they cause burn-in of the image?

Thanks for your help!










------------------------

 

[Plywodstatebum]

I was told that there is a problem with burn-in on RPTV, but that is a good question, would like to know the answer myself.

 

[Stan Sexton]

It doesn't matter if the TV is HD or SD, rear projection or not. Burn-in is a potential problem with certain types of TVs when a stationary pattern is on the screen for an extended time, and the brightness is fairly high.
Bulb-illuminated displays like LCD, LCOS, and DLP are immune from burn-in because they don't really have a screen.
You have to worry about just two types of displays: Plasma and CRT.
Plasmas usually have circuits that try to prevent burn-in, but it does happen. Plasmas will probably disappear in about 3 years as burn-in is just one problem. Heat, high power consumption,weight, altitude sensitivity and high cost to make (mass-production does not lower costs significantly) will kill plasma.
Instead, Asian factories are gearing up for large direct-view LCD panels similar to the ones on Laptop/notebook computers. DVLCD take away the one advantage Plasma has and that is a wall mountable thin panel. While Plasma panels are maxed out at about 4 inches thick, DVLCD can be as much as an inch thick. They run cool, take little power, have no altitude problems, and can be made into huge panels much lighter than Plasma.
While large DVLCD panels are fairly expensive now, the price will drop significantly with mass production.
With Plasma's demise, the only burn-in will occur with CRTs, and they too will eventually disappear.
Soon the word "Burn-In" will leave our vocabulary.

[Non-text portions of this message have been removed]



------------------------

 

[DM]

As Stan mentioned, "burn in" occurs primarily with CRT and Plasma based displays. Burn-in is really just uneven aging of the phospors used in the display.

To avoid burn in, make sure your display is properly calibrated, especially on the "contrast" setting. Many manufacturers ship their sets with contrast turned all the way up in order to make sure they look good on the showroom floor in an environment with lots of light. You can easily calibrate your display by getting one of the calibration DVDs available like Avia, Digital Video Essentials (DVE), Sound & Vision Home Theater Tune Up, etc. Most run about the cost of a regular DVD, the exception being Avia which is about twice that.

Also remember that many sets have settings for each input. Typical calibration method is to get your DVD input calibrated, and copy the settings to the other inputs and tweak by eye from there since each source component has its own characteristics.

Station logos, the black letterbox bars (the black bars don't cause the burn in, but rather the shown area ages faster than the black area), ticker-tape areas on the bottom of the screen, etc. all can cause burn in, with station logos being the worst offenders.

Typical rule of thumb is to try and keep stationary objects on the display to less than 15% of the total viewing time. Between that and calibrating your display (by product is usually a significantly improved picture) you should be safe.

Cheers,

Doug

SteveJS <stevejs@yahoo.com> wrote:

I'm a Voom subscriber and really like the high-quality of the high-
def channels, though I've had a ton of problems getting local
stations. I think I'm just going to get the locals through cable and
not even try any longer to get them through the antenna.

Since I'm pretty new to the world of HDTV, I'm wondering if any of
you can give me some advice on a "burning" question of mine. I've
been told that HDTVs (rear projection) can have a problem with burn-
in of screen images if a stationary image is left on the screen for
too long. Can anyone tell me if I need to be concerned about those
channel identifier logos that appear in the bottom right of the
screen on many stations? Can they cause burn-in of the image?

Thanks for your help!










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------------------------

 

[SteveJS]

[VOOM] Re: Burn-in on HDTVs

Thank you, Stan, for your information about various kinds of
displays - and which ones will likely disappear in the future - but
I'm afraid I still don't know the answer to my question. Will the
still channel identifier logos at the bottom of the screen cause
burn-in on HDTVs that are prone to burn-in? On some stations, the
logo is almost transparent, and you can see movement within and
behind the logo, so I'm not concerned about those. However, on some
stations, the logo is bright and not transparent at all.

Thanks in advance for your help!



--- In VOOM@yahoogroups.com, "Stan Sexton" <stanathomesell@c...>
wrote:
> It doesn't matter if the TV is HD or SD, rear projection or not.
Burn-in is a potential problem with certain types of TVs when a
stationary pattern is on the screen for an extended time, and the
brightness is fairly high.
> Bulb-illuminated displays like LCD, LCOS, and DLP are immune from
burn-in because they don't really have a screen.
> You have to worry about just two types of displays: Plasma and CRT.
> Plasmas usually have circuits that try to prevent burn-in, but it
does happen. Plasmas will probably disappear in about 3 years as
burn-in is just one problem. Heat, high power consumption,weight,
altitude sensitivity and high cost to make (mass-production does not
lower costs significantly) will kill plasma.
> Instead, Asian factories are gearing up for large direct-view LCD
panels similar to the ones on Laptop/notebook computers. DVLCD take
away the one advantage Plasma has and that is a wall mountable thin
panel. While Plasma panels are maxed out at about 4 inches thick,
DVLCD can be as much as an inch thick. They run cool, take little
power, have no altitude problems, and can be made into huge panels
much lighter than Plasma.
> While large DVLCD panels are fairly expensive now, the price will
drop significantly with mass production.
> With Plasma's demise, the only burn-in will occur with CRTs, and
they too will eventually disappear.
> Soon the word "Burn-In" will leave our vocabulary.
>
> [Non-text portions of this message have been removed]





------------------------

 

[rvsixer]

There has been excellent information already offered on technologies subject to burn-in (properly adjust contrast, limit stationary sidebar and logo viewing, only correction I have is ALL RPTV technologies by definition must have a screen).

Yes if you watch the same logo for hours at a time, in factory "torch" mode screen settings, you will undoubtedly get burn-in. With a properly adjusted set the chances of it drop down to a remote possibility (and as mentioned PQ goes up significantly).

Most 16:9 sets allow you to shift a 4:3 image around, I do this every 15-20 minutes if watching a logo'd program for any length of time. The logo is moved to a completely new section of the screen. I have no worries about burn-in on my CRT RPTV.

TV's are in a state of flux right now. Having just shopped for a new bigscreen the last four months, I could not find a current mass produced fixed pixel display that matched the PQ of a properly adjusted CRT (also the DLP rainbows and LCD SDE really killed me on those technologies), and none come anywhere near the same price point.

So take your choice, no burn-in and less PQ, or avoidable burn-in and great PQ for a low price. Undoubtedly in a couple of years new technologies will evolve and kill the CRT .

Rob.

 

[Stan Sexton]

Re: [VOOM] Re: Burn-in on HDTVs

Anything stationary can cause burn-in. Keep your contrast and brightness down to reasonable levels and you shouldn't have any problems. Before the switch to LCD screens and/or "animation", I used to see tons of ATM screens with severe burn-in. Oh, and games tend to worse than the stationary lines and bars on TV programs. Not because of stationary material so much as the gamers like maximum brightness and contrast.In the last few years, game designers have been aware of burn-in potential.
My sons like to play lots of games, which is a big reason I chose the Sony LCD 50" Display. Biggest drawback is only one DVI input and I need 4, and DVI switchers are expensive.

[Non-text portions of this message have been removed]



------------------------

 

[frank elliot]

Re: [VOOM] Re: Burn-in on HDTVs

I purchased a LG 52 inch DLP three weeks ago and the
picture is fantastic!! $2000 No rainbows....no worry
about burnin....Now I hope we dont lose vOOM!! RALPH
--- rvsixer <satguys2004@yahoo.com> wrote:

>
> SteveJSWill the still channel identifier logos at
> the bottom of the screen cause burn-in on HDTVs that
> are prone to burn-in?[/QUOTE Wrote:
> >
> >
> > There has been excellent information already
> offered on technologies
> > subject to burn-in (properly adjust contrast,
> limit stationary sidebar
> > and logo viewing, only correction I have is ALL
> RPTV technologies by
> > definition must have a screen).
> >
> > Yes if you watch the same logo for hours at a
> time, in factory "torch"
> > mode screen settings, you will undoubtedly get
> burn-in. With a
> > properly adjusted set the chances of it drop down
> to a remote
> > possibility (and as mentioned PQ goes up
> significantly).
> >
> > Most 16:9 sets allow you to shift a 4:3 image
> around, I do this every
> > 15-20 minutes if watching a logo'd program for any
> length of time. The
> > logo is moved to a completely new section of the
> screen. I have no
> > worries about burn-in on my CRT RPTV.
> >
> > TV's are in a state of flux right now. Having
> just shopped for a new
> > bigscreen the last four months, I could not find a
> current mass
> > produced fixed pixel display that matched the PQ
> of a properly adjusted
> > CRT (also the DLP rainbows and LCD SDE really
> killed me on those
> > technologies), and none come anywhere near the
> same price point.
> >
> > So take your choice, no burn-in and less PQ, or
> avoidable burn-in and
> > great PQ for a low price. Undoubtedly in a couple
> of years new
> > technologies will evolve and kill the CRT
> .
> >
> > Rob.
>
>
> --
> rvsixer
>
------------------------------------------------------------------------
> This message was posted via
> http://www.satelliteguys.us by rvsixer
>
>


=====


test'; ">



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------------------------

 

[rvsixer]

I purchased a LG 52 inch DLP three weeks ago and the
picture is fantastic!! $2000 No rainbows....no worry
about burnin....Now I hope we dont lose vOOM!! RALPH

Sounds like great set that meets your needs. Unfortunately, both my wife and I can't watch current single-chip DLP technology since we both see rainbows (PQ is very subjective also).

57" CRT is $1600, and with my non-burnin conducive usage habits and using current real world bulb cost/life figures (not the highly overrated manufacturers specs), I figured on saving another $900-1200 over five years. The total savings will hopefully buy a "free" nice new direct view no burn-in set then .

Absolutely ditto on not loosing VOOM, that's what all these HDTV's want to consume .

Rob.

 

[Plywodstatebum]

I was told that there is a problem with burn-in on RPTV, but that is a
good question, would like to know the answer myself.


--
Plywodstatebum
------------------------------------------------------------------------
This message was posted via http://www.satelliteguys.us by Plywodstatebum



------------------------

 

[rvsixer]

[VOOM] Re: Burn-in on HDTVs

SteveJSWill the still channel identifier logos at the bottom of the screen cause burn-in on HDTVs that are prone to burn-in?[/QUOTE Wrote:
>
>
> There has been excellent information already offered on technologies
> subject to burn-in (properly adjust contrast, limit stationary sidebar
> and logo viewing, only correction I have is ALL RPTV technologies by
> definition must have a screen).
>
> Yes if you watch the same logo for hours at a time, in factory "torch"
> mode screen settings, you will undoubtedly get burn-in. With a
> properly adjusted set the chances of it drop down to a remote
> possibility (and as mentioned PQ goes up significantly).
>
> Most 16:9 sets allow you to shift a 4:3 image around, I do this every
> 15-20 minutes if watching a logo'd program for any length of time. The
> logo is moved to a completely new section of the screen. I have no
> worries about burn-in on my CRT RPTV.
>
> TV's are in a state of flux right now. Having just shopped for a new
> bigscreen the last four months, I could not find a current mass
> produced fixed pixel display that matched the PQ of a properly adjusted
> CRT (also the DLP rainbows and LCD SDE really killed me on those
> technologies), and none come anywhere near the same price point.
>
> So take your choice, no burn-in and less PQ, or avoidable burn-in and
> great PQ for a low price. Undoubtedly in a couple of years new
> technologies will evolve and kill the CRT .
>
> Rob.


--
rvsixer
------------------------------------------------------------------------
This message was posted via http://www.satelliteguys.us by rvsixer



------------------------

 

[rvsixer]

Re: [VOOM] Re: Burn-in on HDTVs

frank elliot Wrote:
> I purchased a LG 52 inch DLP three weeks ago and the
> picture is fantastic!! $2000 No rainbows....no worry
> about burnin....Now I hope we dont lose vOOM!! RALPH

Sounds like great set that meets your needs. Unfortunately, both my
wife and I can't watch current single-chip DLP technology since we both
see rainbows (PQ is -very- subjective also).

57" CRT is $1600, and with my non-burnin conducive usage habits and
using current real world bulb cost/life figures (not the highly
overrated manufacturers specs), I figured on saving another $900-1200
over five years. The total savings will hopefully buy a "free" nice
new direct view no burn-in set then .

Absolutely ditto on not loosing VOOM, that's what all these HDTV's want
to consume .

Rob.


--
rvsixer
------------------------------------------------------------------------
This message was posted via http://www.satelliteguys.us by rvsixer



------------------------

 

[sjones]

I often wonder why panasonic would put a pc input connection on the front of my 42" plasma when burn-in can occur. Its almost like they want you to do it.

Windows XP looks great on there while surfing the web with a wireless keyboard and air mouse but I'm too nervous about burn-in to use it more than 20 - 30mins at a time.

 

[deeann]

I have a PC hooked up to mine (older Panasonic 4UY). It's used for light web surfing sometimes, but mostly for streamed music (and Winamp visualization plug-ins double as a screensaver), non R1 DVDs and games.