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Z3 - light bands on top & bottom of screen

Discussion in 'Projectors, Screens & Video Processors' started by Plamff, May 21, 2005.

  1. Plamff

    Plamff
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    Hello all,

    I have had a Sanyo Z3 for a month or so now.

    I'm very pleased with it - but have noticed a strange thing. At the top and bottom of the picture there is a band 4-5 pixels wide that is a bit lighter than the rest of the image. I initially suspected a panel alignment problem, but the R G and B panels seem to be well aligned.

    It disappears on darker images but is worst on light coloured / panning views.
    It's not the end of the world.....but you know how it is...once you notice these damn things.

    Any advice appreciated :confused:
     
  2. PJTX100

    PJTX100
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    It may be "hidden" extra info eg subtitles / closed captions etc transgressing onto the visible pic. Is there an overscan option on the Z3 which will allow you to "nip it off"...PJ :)
     
  3. Plamff

    Plamff
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    Not sure. Will check it out if I can do this.

    Many thanks :thumbsup:
     
  4. ptek

    ptek
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    Possibly rear mirrow alignment, try inputting a white signal, you should be able to check for uniformity, if still have shading, get it fixed under warranty :hiya:
     
  5. Plamff

    Plamff
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    Many thanks, will try that :)
     
  6. Plamff

    Plamff
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    I tried inputting a white signal and cannot see the lightening.

    Also, I tried red, green and blue signals and they all seem OK.

    After extensive scrutiny -
    You can't see it on v. dark or v. light images, only medium images (blue skies for instance).

    The topmost and bottommost 2-3 rows of pixels are lighter than they should be and the next 2-3 rows pixels inside are slightly darker.

    This happens on every screen mode - full / widescreen etc.

    I phoned Sanyo technical helpline - the chap told me it was dust on the panels and suggested I clean them with the puffer. Didn't have a lot of confidence in that advice but did it anyway - no change.

    Amusingly, I was getting obsessed with the mild VB until I saw the light bands at the top and bottom of the picture. Now I don't notice the VB.

    Perhaps, I've got a compulsive/obsessive personality :rolleyes:
     
  7. Geesus

    Geesus
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    I think its only natural to notice every fault when you first buy something - especially if you read this forum :rotfl:

    I'm just getting on with enjoying mine now - even the dead pixel isn't bothering me at all - use it, enjoy it, then upgrade a year later - job done! ;)
     
  8. Plamff

    Plamff
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    good advice.
    :thumbsup:
     

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