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Channel logos and screen burn

Discussion in 'Electronic Repair' started by James Sweet, Sep 22, 2003.

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  1. James Sweet

    James Sweet Guest

    So this is a little off topic but after getting my newly acquired PTV up and
    running I noticed there's a faint logo burned into the upper right corner of
    the screen. I haven't watched TV much in a long time but flipping through
    channels I was shocked at how many of them display a static logo, this must
    cause a lot of damage with all the CRT projectors and plasma displays out
    there now. Is there any movement to get the FCC or other relevant
    organization to regulate this ridiculousness? Even if they'd move the logos
    around periodically it would be sufficient. Is there anything an ordinary
    person can do to avoid this? I'm worried that someone will leave this thing
    on a channel with a logo and burn it in further.
     
  2. There is a lot of bitching about the problems on alt.tv.tech.hdtv, AVS Forum
    , and similar forums where videophiles lurk, but no movement that is
    organized in any effective way that I can find. The problem is that any
    attempt to regulate it runs right into the 1st Amendment. Also, most people
    who realize the potential for burn in also know that it is rarely a problem
    unless one is running the contrast as high as the manufacturers set it at
    the factory and one leaves the same channel on for many hours. Anyone
    trying to get the best performance out of a set will be turning the contrast
    way down anyway, unless they use it in direct sunlight.

    Just vary the viewing and don't run it in "torch mode" and there will likely
    be no problem with burn in. Other problems are caused by leaving OSD
    onscreen constantly.

    Leonard Caillouet
     
  3. u1061771156

    u1061771156 Guest

    There's a lot of debate on this issue here in Europe. Some broadcasters
    (eg Five) have been successfully persuaded to lose the logos.
    http://logofreetv.org
    I doubt there's much chance on your side of the pond, though.

    Mike.
    P.S. Due to swen virus, email address is not valid. Hopefully it will
    direct some of the mail blizzard towards the root cause... ;-)
     
  4. Jerry G.

    Jerry G. Guest

    You must be driving the contrast control up at "spotlight" level. The
    station logo is supposed to only be at about 7% to 10% level. At normal
    contrast levels, this should not be a problem. Our sets are on many hours
    of the day and evenings, and there are no burns from these. All the
    stations out here have this.

    --

    Greetings,

    Jerry Greenberg GLG Technologies GLG
    =========================================
    WebPage http://www.zoom-one.com
    Electronics http://www.zoom-one.com/electron.htm
    Instruments http://www.zoom-one.com/glgtech.htm
    =========================================


    There is a lot of bitching about the problems on alt.tv.tech.hdtv, AVS Forum
    , and similar forums where videophiles lurk, but no movement that is
    organized in any effective way that I can find. The problem is that any
    attempt to regulate it runs right into the 1st Amendment. Also, most people
    who realize the potential for burn in also know that it is rarely a problem
    unless one is running the contrast as high as the manufacturers set it at
    the factory and one leaves the same channel on for many hours. Anyone
    trying to get the best performance out of a set will be turning the contrast
    way down anyway, unless they use it in direct sunlight.

    Just vary the viewing and don't run it in "torch mode" and there will likely
    be no problem with burn in. Other problems are caused by leaving OSD
    onscreen constantly.

    Leonard Caillouet
     
  5. Sharon Leigh

    Sharon Leigh Guest

    My parents got a projection TV and within months, the FOX News logo was
    burned into their screen. They keep the set on several hours a day, but I
    was under the impression that it would take years for screen burn-in to
    occur on modern TVs, not months. what gives?
     
  6. John Del

    John Del Guest

    Subject: Re: Channel logos and screen burn

    Actually, the contrast or picture (whatever they call it) is the most critical.
    Most manufacturers ship the TVs with this control cranked to full on default.
    The reason for this is that consumers viewing these TVs alongside competitors
    units judge picture quality by contrast (like cranking bass and treble to full
    on audio). On my PTV (which came at 100% from factory), the "picture" level is
    best at about 20%. There are two benefits, it won't burn in, and the CRTs will
    last twice as long.

    John
     
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