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Brightness Change

Discussion in 'Televisions' started by Vinesh, Jan 5, 2003.

  1. Vinesh

    Vinesh
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    When watching DVD's, I find the brightness of the screen changes from normal brightness to slightly darker. This only happens on certain DVD's, ie 20th Century Fox, certain R1's.

    Current Equipment:
    Pro-wire S-video to S-video cable (TV to DVD)
    Tosh 28" TV (6 Yrs old)

    Any Suggestions?
     
  2. Vinesh

    Vinesh
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    Is there a better way to connect the above?

    S-Video to S-Video (DVD to TV) 1.5 metre lentgh. This will be changed as it is over-strecthed abit.
    Digital Coax (DVD to AMP)
    Cambridge Audio L+R Interconnects (TV to AMP)

    TV Connections:
    S-Video
    Scart
    Componet Video - I think (Need to make sure).

    DVD Connections:
    RGB, S-Video, Composite AV
    S-Video
    Composite video
     
  3. jim.rae

    jim.rae
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    Do you have the black level control switched on in your DVD menu?

    Some TVs also have the same facility.

    That could change the brightness at times when it can't cope with the picture it's trying to keep the blacks dark on.

    As far as connections are concerned - for the pictures component would be first choice - if you have it - if not, RGB is almost as good and sometimes less difficult to calibrate depending on your kit.

    Have a delve in your DVD and TV menu to see if you have black level clamping and switch it off...
     
  4. jim.rae

    jim.rae
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    PS - Make sure you mean component and not composite, as a six year old TV is not likely to have component in...you know the one that uses three phono style leads for pictures...
     
  5. Vinesh

    Vinesh
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    Thank you for pointing that out. :)

    Component and not Composite
     
  6. jim.rae

    jim.rae
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    That takes us back where we started - checking if there is a black level control somewhere in the system that's causing the problem...
     
  7. Squirrel God

    Squirrel God
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    If it only happens on some DVDs, then it's the DVDs that have a dark transfer which is down to a whole host of reasons. I have some DVDs that I think have a particularly dark transfer or are lacking in contrast compared to others (e.g. American Pie).

    In this case, don't touch anything. There's nothing wrong with your TV.

    If this "darkness" happens on all DVDs, then it might be the way you have it connected. Try a good quality Scart instead of an S-Video cable if you can.

    In all cases, calibration via a test/set-up disk is a good thing and should be done anyway.
     
  8. Vinesh

    Vinesh
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    Thanks for the replies. I will check the settings.
     
  9. YellowCows

    YellowCows
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    Also, check the Toshiba Picture settings menu (the first menu page). If it has an entry called 'Black Stretch', switch it to OFF.

    In the future, look into a system-calibration DVD, such as Avia or Sound & Vision to optimise your display settings - that way, you'll always have the best possible picture.

    If your DVD player has component-outs, what are you waiting for? USE THEM!

    Some DVD's are darker than others, though - in which case, it wouldn't be a fault with your telly.

    Moory:)
     
  10. Vinesh

    Vinesh
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  11. jim.rae

    jim.rae
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    RGB by SCART is indeed better than S Video in most instances...
     
  12. Doubledoom

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    Toshiba widescreens from 6 years ago did have component input on many of the models.

    Also, Toshiba sets of that time tended to suffer poor RGB implentation and usually offered a better picture using s-video.
     

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