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Picture comes on and line screen turns blue and the picture does not come back on

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  • wunderkind Jun 09, 2008

    Picture comes on for about 20-30 second, then blue lines appear, then the screen goes entirely blue

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Whats the model numberof your set? It sounds like the blue CRT is shorted if its a projection TV

Posted on May 10, 2008

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1. My Sony KP-57WS500 TV is turning blue after abut 3 minutesof operation. It stays that way for about 30 miunes and comes back with pictures again, but with predominatly blue color. 2. Sometimes the TV...


Sounds like the picture tubes are failing,common on sony. do you notice any thin horizontal lines? You mite get lucky and be able to adjust the voltages. Remove back cover and look inside to see which tubes are lighting up.The front panel below the screen will come off and behind it is a small access cover.remove it. there you will find the voltage controls (its a plastic square with 6 knobs). 2 knobs for each tube, 1 is focus the other is the voltage labeled "screen". they are marked so look closely. Green is always in the middle but sometimes they flip the controls for red and blue so pay attention to which you are controlling .slowly adjust screen voltages to see if you can get it to stay on. If you over do it those thin horizontal lines will pop up and the tv will shut off again. If you already have lines back off the voltage by turning knob to the left slowly until they diappear. If that seems to fix it but the problem but it comes back later, then the tubes are shot. good luck!

Jul 05, 2010 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Lines, then no picture, then turns off


Remove Front panel look for screen/focus controls adjust them you have R/G/B for each tube ,you have screen drive controls as well as focus Start with red turn green and blue off adjust each one untill you have a black/white picture, If screen drives are to high TV will turn off.Also if STK ICs are bad TV will not come on there is a blue capacitor behind hori output Transistor that also burns out CK it as well.LET me know if any of this has helped you or if you need more information.

Aug 06, 2009 | Sony KP-57HW40 57" Rear Projection...

1 Answer

Rca D52W20 blue screen when turned on


Almost certainly the blue picture tube is bad. This is a huge job to replace and quite expensive. Generally it is not worth doing.

Mar 26, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Blue screen


This is easy to fix, pull off the front grill and turn the bottom left trim pot anti clockwise until the picture comes back. I am asuming the picture there and then it fades to blue. There is a step by step instruction on how to get the whole thing apart http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html

Sep 15, 2008 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Apex gb5108


'I to am getting only wavy blue lines, no sound, doesn't even show channel indicators. TV was off for 4 days, came home turned it on and ten minutes later this screen appeared, it wont even show the menu screen, different channels or video inputs no sound either.

Jun 21, 2008 | Apex Digital GB5108 51" Rear Projection...

2 Answers

Curved blue lines on screen.


You have a completely different problem. The screen voltage for the blue picture tube is slightly too high on your set. This will put fine lines in the background of the picture, called retrace lines. This is very common and easy to correct. Remove the front speaker cover and the access panel behind it. Look inside and you will see a black box with six controls, each control having a little white glue on it. This is the Focus/Screen block. Three controls are labeled Focus and three are labeled Screen. The screen control in the center is for green but I am not sure if the screen control on the left or right is for blue for your model. With the TV on, set it to VIDEO 1 but do not connect anything to the VIDEO 1 jacks. This will produce a pure dark picture, showing any faint lines in the background. Choose one of the screen controls and increase (turn clockwise) it slightly. If the blue lines do not get brighter it means you are turning the red screen control, so put it back where it was and choose the other screen control. When you find the blue screen control, decrease (turn counter-clockwise) it until just when the blue lines are gone. If you want you can check that the red and green screen controls are set to just below the point where their faint lines are visible. When done, replace the panels and your picture will be back to perfect.

Apr 11, 2008 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Horizontal Lines and Blue Tint on my Sony KDP 57XBR2


ok,your porblem is very simple,reheat or resolder the main board your tv.

 

Oct 22, 2007 | Sony Grand WEGA KDP-57XBR2 57" Rear...

3 Answers

SONY KP57WV600-Turns Blue


yes ,it sounds like screen adjustment or focus block, should be around $200- $325 to repair.

Sep 08, 2007 | Sony KP-57HW40 57" Rear Projection...

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