Question about Sony KP-57HW40 57" Rear Projection Television

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My screen turns green and then turns off

When i turn the Tv on the colors fade, flashes green wavy lines, goes totally green and then the TV turns off sometimes before the volume does.

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  • captinhowdy4 Feb 26, 2009

    when the tv comes on after a few mins the screen turns blue? mine isnt green could this be the same problem.

  • bluedice16 Mar 05, 2009

    i did this and it helped but didnt stop the problem from occuring again. my colors fade in and out but i have no line anymore. and sometimes it still flashes a green screen.

  • bluedice16 Mar 18, 2009

    I HAD A REPAIRMAN TAKE A LOOK AT MY TV, HE SAID THAT THE GREEN AND RED PICTURE TUBES ARE INTERMITTANT AND NEED TO BE REPLACED.

  • bluedice16 Mar 20, 2009

    where can i find that box and how much is it, and is hard to replace? also if it is the tubes where can i find those to buy?

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You need to adjust the screen voltage. behind the front grille and inside cover. a small black box 6 adjusters protruding from it. only adjust the the color counterclockwise that matches the problem in this case it's the green so look for the knob with "G" marked by it. there are 2 with "g" marked by them the row across the top of the box are for focus don't adjust. back the knob off untill the raster is blank with your input set to an inactive input, the picture should be blank and black.
when it is you have the adjuster close to where it should be, now change the input to an active signal and turn the color off so that you wil have black and white picture. adjust that knob untill you do have a truely black and white picture not too green or red or blue. go back to inactive video input and check that there are no lines of any color on the screen. repeat if needed. always adjust these knobs slowly the set will be watching you ! if your autofocus won't work now you have the adjustment set too low. check this function before putting back together again. these adjustments can be real touchy so be patient

Posted on Feb 20, 2009

  • 1 more comment 
  • A Schneider Mar 05, 2009

    with the set turned off adjust those knobs ack and forth quickly. this will clean the internal tracks and settle the problem if not replace the block. only adjust the color that give you the trouble. then perform he setup.

  • A Schneider Mar 18, 2009

    nothing wrong with your tubes, if the proceedure didn't work then replace the little box with those adjustors on it.

  • A Schneider Mar 20, 2009

    i doubt those tubes are still availible and that box is the 1 you have been adjusting on.

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