Question about Sony KP-57WS500 57" Rear Projection Television

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Started with green arch lines on the screen

Now the problem has gotten worse. The green tint on the tv screen starts to fade light then dark in color. Then the whole screen turns green in color. After that the tv power's off and the light flashes eight times. I was wondering where I should go from here. My tv is 5 1/2 yrs old. Any help would be appreciated.

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  • Brett Hawk Jun 09, 2008

    Goldflack, My tv's model number is a Sony KP57WS500.




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If your TV is a CRT type, then most likley the CRT guns need replacing. If an LCd, then the convergence modules will have to be replaced. it is also possible that you may have a couple faulty resistor/s and/or capacitor/s.

My advice would be to seek the assistance of a TV repairman, as this is not very simple to do if you have no prior experience. Also, it is very difficult to say what exactly is wrong without doing a manual inspection.

Posted on Jun 09, 2008

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  • Swilin Sampson
    Swilin Sampson Jun 09, 2008

    OK, you have a CRT TV..
    Your problem here has to do with the amount of aging that happens to the three colour tubes - red, green and blue. There is a way to adjust this by removing the speaker grill assembly in front of the set.

    On the left hand side behind the speaker cover you will see a black square block with six adjustment points. Look for the one marked SCR GREEN. Switch the set to a unused input. Now adjust the GREEN point counter both clockwise and anti-clockwise. A small adjustment should do it, Switch back to a picture and make sure the whites are still white.

    If that doesnt work, then you will have to replace the three CRT tubes. This should sort your problem. I would however suggest asking a Sony service center
    to do this for you, if you have no prior experience. This is a dangerous thing to do as you will be
    working close to the 35KV supply the the anodes of the three tubes. There are voltages inside that can KILL, even when the TV is unplugged.

  • Swilin Sampson
    Swilin Sampson Jun 09, 2008

    I must warn yoou that repair does not come cheap..somewhere in the $400-500 range. If your TV is under warranty, then great! Simply contact your point of purchase.

    If not, you will have to decide whether a repair is worth it, or if you'd like to go in for a new TV.

    Hope that helps! If the solution I provided helps you in any way, kindly take a moment to "Accept" my solution..

    Thanks in advance :)

  • Swilin Sampson
    Swilin Sampson Jun 10, 2008

    THIS article may help you in reaching the SCR GREEN and dismantling the frille, if you wish to attempt it..


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Can u tell me the model no of ur tv

Posted on Jun 09, 2008

  • khader ibrahim Jun 10, 2008

    problem in CRT gun...Remove cover of ur TV and then do this...

    When focused in on the controls, you want to
    concentrate on the bottom row for the voltage / ray gun projection
    adjustment. The colors are labeled below and from left to right are
    blue, green, and red. Choose the one that needs to be adjusted and turn
    ever so slightly with your Philips screwdriver to remove the lines. In
    my case, the red just needed to be turned 1/8 of a rotation to be back
    in adjustment. Do not turn to quickly or abruptly or you could possibly
    damage your TV by varying the voltage too quickly.

    try it if its not solve means u want to change the gun.....



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