Question about Sony KP-46WT510 46" Rear Projection HDTV

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Problem with picture and sound

When I turn the TV on, the screen appears green with horizontal curved lines and shuts off after approximately 10 seconds.  There is no sound, no picture.  A tech came out and replaced the three crt's?  I think that's what they are called.  When he turned the set back on, the same green screen appeared with the horizontal curved lines.  He was able to make the screen turn different colors, but the curved lines and no picture were still there with no sound.  The set is under warranty and I am getting a replacement. But if I can keep this set,  what do you think it needs get it going?  Any help would be appreciated.  Thanks.

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Re: Problem with picture and sound

A board (signal) bad ? or possible B board.....proof is by
substituion = can get expensive.................T.

Posted on Dec 04, 2007

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2 Answers

I get curved red lines and then screen goes completely red and no sound

This is symptom of defective red picture tube in TV that needs to be replaced.
Let me know if you want to replace it by yourself to provide you part number info or call tv tech to do the job.

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Sony 65" Rear Projection loses picture, then gets diagonal lines

This is common problem on this tv, picture tube is bad. Blue and green is more % bad.
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Aug 07, 2009 | Hitachi 51F59 51" HDTV Projection...

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TV turns on with a green screen with curved horizontal lines.

It seems you may have a serious problem with your video board. That's why you are getting those symptoms. It's better if you replace it asap!

Aug 04, 2009 | Mitsubishi WS-48315 48" Rear Projection...

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Red and blue ghosting,

The most likely cause is shorted convergence chips and possibly a few pico fuses.

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony,Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2
Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

You can see some more examples and find a fix herebb0cf99.png

Jul 12, 2009 | LG RU-52SZ51D 52" Rear Projection...

1 Answer

Sony Trinitron 20" TV (KV-2093R) Suddenly Shut Off

2 things that will cause that vertical IC or Yoke! Listen to this one went on service call 2wks ago Customer had a 50 INCH1988 pioneer big screen replaced 3 capacitors resolder poor connections TV is now working like New ?

Jun 23, 2009 | Sony KP-51HW40 51" Rear Projection...

2 Answers

Tv problem

bias on green is too high or current is too high^^^turn bias down on focus block^^^--curved lines(not retrace lines) convergance IC`s going or resistor(s) out of range^^^replace them^^^

Sep 10, 2008 | Mitsubishi VS-50605 50" Rear Projection...

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Sony Color Rear Video Projector - KP 57hw40 / Mfg. February 2002

i have the same problem picture is blue/green with blue and green arched horizontal lines

no picture at all only sound then tv shuts off after 5-10 seconds and then a bright blue flash in the center of the screen

have tried adjusting the voltage screws didnt do anything

Jul 13, 2008 | Sony KP-57HW40 57" 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

2 Answers

WS55711 mitsubishi RPS - Dec 2002

This sounds like your convergence correction amplifiers have malfunctioned. These Integrated Circuits often burn out after a few years (STK392-110) they can be replaced with a higher version (STK392-150) However it is important to have the biasing circuitry checked to make sure nothing has burnt out as a result of the ICs malfunctioning. If you have a background in electronics you can repair this problem with very little effort, however if you do not have a background in electronics, I would suggest that you have your TV serviced by a qualified TV technician.


I hope this helps,


Thank you,



Oct 15, 2007 | Mitsubishi WS-55711 55" Rear Projection...

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