1. Join Now

    AVForums.com uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

red/grn/blu flickering pixels

Discussion in 'Plasma TVs' started by zerolight, Feb 6, 2004.

  1. zerolight

    zerolight
    Active Member

    Joined:
    Jan 29, 2004
    Messages:
    239
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    21
    Location:
    Glasgow
    Ratings:
    +10
    Just got my plasma 42pa20b. so I'm a newbie. i notice that on blacks, if I go up close to the tv to examine the picture, the screen shimmers with lots of tiny green, black, and blue pixels. from a distance its not noticeable, though I do notice a slight shimmer to the picture compared to a regular CRT. is this normal?
     
  2. _Sin

    _Sin
    Active Member

    Joined:
    Oct 25, 2003
    Messages:
    104
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Ratings:
    +7
    Yup, that's completely normal for a plasma...
     
  3. LV426

    LV426
    Administrator Staff Member

    Joined:
    Jul 14, 2000
    Messages:
    12,754
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    166
    Location:
    Somewhere in South Yorkshire
    Ratings:
    +4,908
    It occurs because Plasma 'cells' (pixels) cannot be illuminated very slightly (dimly) as would be necessary to produce a very tiny amount of a given colour. So they have to illuminate them by a greater amount. However, to keep the colour rendition right, they flash them on and off.
     
  4. zerolight

    zerolight
    Active Member

    Joined:
    Jan 29, 2004
    Messages:
    239
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    21
    Location:
    Glasgow
    Ratings:
    +10
    ah. thanks guys. phew.
     
  5. rolandrat

    rolandrat
    Active Member

    Joined:
    Oct 3, 2003
    Messages:
    452
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    31
    Location:
    Northampton
    Ratings:
    +39
    If you increase or decrease the brightness you will notice the quantity changes, just like chap above says perfectly normal.
    You must realise that a plasma is meant to be watched from a distance not close up, as it will always look pants close up.
    Relax and enjoy the future.
     
  6. Dave R

    Dave R
    Standard Member

    Joined:
    Jul 14, 2000
    Messages:
    57
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    8
    Location:
    Bristol, UK
    Ratings:
    +2
    Is there a "minimum" distance? I had heard about twice the screen width as a suggestion.
    I was thinking of getting a 42" and will be viewing from about 8 feet.
     
  7. _Sin

    _Sin
    Active Member

    Joined:
    Oct 25, 2003
    Messages:
    104
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Ratings:
    +7
    I think your best bet is to visit a shop and have a look. I doubt this particular "issue" will be a problem though - the dithering really is only very noticeable when you're within a couple of feet of the screen. There may well be other things you notice from 8 feet away which are worse, but you should judge for yourself.

    FWIW I sit pretty close to mine - maybe 3-4 meters away. I have a 50" screen, and I find it just fine at this distance. Whats the point of buying a big screen and then sitting so far away it looks like a portable :)

    Of course if someone wants to buy me a nice big house I'm sure I'll learn to live with sitting further away...
     

Share This Page

Loading...