Question about Sony KP-51HW40 51" Rear Projection Television

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Sony KP-51HW40 51in

When i turn it on picture seems allright then it slowly starts turning red until all you can see is red. can i fix this myself or is it gonna cost me a grip.?

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  • tibi77 Jul 25, 2008

    I HAVE THE SAME PROBLEM. PICTURE TURNS RED AFTER ITS BEEN ON FOR ABOUT 10 MINUTES.

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It sounds like your red tube is going out. Fairly expensive piece but easily replaced. They run anywhere from $250-$350.

Posted on Jul 29, 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!

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The screen turn completly red after about 20 min being on


Usually that is a sign that your red picture tube is ailing. However there is a chance that it can be adjusted out, at least buy you time worst case.There is a voltage control in the front of the TV, you have to remove the bottom front half of tv to get to it. Some Sony's have 2 screws hiding at the bottom of set in front hidden behind 2 plastic covers,others just have screws along the backside.Be careful there are wires to front panel attached so remove slowly and leave wires on just move it out of your way..Once you remove that there is a small access panel to take off. You will see the voltage control (small plastic square with 6 knobs) The top knobs are focus controls for each tube the bottoms are for voltage adjust. The far right knobs are for red.So you can turn the red voltage control SLOWLY to the left,this will reduce voltage.Reduce until you see the red lines disappear. If you go too far one way or the other with the voltage control the tv will shut down and you'll waste time readjusting and turning set on until it stays on. If you can't adjust it enough to get all the red out without shuting down tv tube is in too bad of shape.

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1 Answer

I BOUGHT A KP-57HW40 SONY AND ALL I CAN SEE IS A


Try this....

http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html

These sets have weak picture tubes, this may buy you some time. It is not worth changing the tubes in the set. The cost would be more then its worth. Try these adjustments until it completely dies. I have the same set.

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1 Answer

Sony rear projection screen is red then tv shuts off


Can be 1 of 2 things. 1st the red tube just needs the voltage to it turned down. In the front of TV (you have to remove the lower front half of TV to access it) is a plastic square with 6 knobs. The from left to right top knobs control focus for blue,green red. The bottom knobs control voltage to each tube in same order (so lower right knob for red) turn SLOWLY to left to reduce voltage until excessive red and lines go away. If you over turn left or right set will turn off. If that does not fix it or if lines reappear then option 2 is that red picture tube is failing outright and needs replacement.

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1 Answer

Sony KP-511HW40 fleshing with green color and shuts off


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1 Answer

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completly remove speaker cover untill you can see the electronics. there will be a box with 6 setting screws. on the bottom row of screws , look for the screw with the letter r under it .  verry verry slowly turn that screw counter clock wise untill the picture clears up . good luck

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Sony KP-51HW40 No Picture, only sound


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