Question about Sony Grand WEGA KF50WE610 50" Rear Projection HDTV-Ready Television

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Slight distortion of color on screen

Hello. My issue is found on the almost left bottom portion of the screen.There is a slight color distortion at an individual spot, about a foot in diameter and primarily is noticeable when showing a green background ( like golf ). It is localized and seems to be getting worse. Any thoughts as to cure or what the problem is? The tv has been excellent so far other than this. Firedog

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Re: Slight distortion of color on screen

I have this same problem. This is caused by a defective optical block. Sony currently has extended coverage on optical block replacements, but not for the symptoms our tv's display. After several phone calls, I was told they would cover replacement of my optical block (a $1000 part by the way), but I would have to drive it to another state to one of their certified service centers. Once it was there, they suddenly decided to NOT cover the block as promised to me on the phone, and conveniently told me although my block was defective, that it wasn't the right kind of defective. So I was left with wasted time, miles, gas, and a diagnostic charge for an unfixed TV. visit for more help.

Posted on Sep 25, 2007

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I am experiencing a double image and a slight warping on the lower portion of the screen. Perhaps there was something touched on the set. Can you help me.?

Replace conversion IC's (2)
part number: STK 392-xxx( probably STK 392-580 )
Also check resistors in circuit for >> opens <<

May 19, 2010 | Sony KP-46WT510 46" Rear Projection HDTV

2 Answers

Yellow Tint over picture...'s simple really...yellow is from a degrading video unit and system, you'll find that it's high time for a major service situation.

May 10, 2008 | Samsung HCN4226W 42" Rear Projection...

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Sony rear projection kp-51ws510. color alignment

sounds like bad convergence IC---not uncommon on this set-both convergence IC"s need to be replaced and the set adjusted

Aug 07, 2009 | Projection Televisions

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Distorted pict. w/ wavy circles

Projection sets have two very common problems.

The first common problem is convergence

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,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

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

*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

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya

Dec 01, 2008 | Hitachi 53FDX20B 53" Rear Projection...

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Pt-47wx49e convergence problem

I just replaced the 2 convergance chips, but it did not seem to fix the problem. I then tested all the resistors that feed the convergence chips anf there was a 2.2 ohm fusable blown. IT was R7050 on mine. That seemed to fix it so that I could adjust all the colors through the convergence 2 screen. There seems to be a slight bow near the bottom when you look at the c2 screen, but not noticable when you are watching a picture. Since I got this broken, I am not sure how perfect it should be.

If anyone can send me the service manual, I would appretiate it. Thanks.

Oct 10, 2008 | Panasonic PT-47WX49 47" Rear Projection...

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Philips Rear Projection Issue with Color Alignment.

this seems to be convergence problem in your tv .............

Aug 23, 2008 | Projection Televisions

1 Answer

Philips 46-inch Rear Projection with bowed image?? slight distortion

You have a convergence problem. Here are some of the most common symptoms. 

Screen looks 3D
One or more colors can't be adjusted when when using the convergence menu. 
Screen is bowed in but stationary.

You need to replace the convergence chips and convergence resistors. Check the site They have put together a kit for your exact model. The kit inlcludes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. Its an easy fix. 

Jul 02, 2008 | Philips 46PP9302 46" Rear Projection...

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Pic distorted slightly on left side. news (crawl) on bottom of screen angles down on left side, top of pic seems to angle up also. very minor problem but annoying anyway! pic clarity & color excellent.

Convergence amp ic bad
Sony Convergence

Jan 29, 2008 | Toshiba 55H70 55" Rear Projection...

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Distorted picture

i was just working on a set with the same problem .. i found a east west correction curicit with a falty transistor. something in that cuircit has failed.

Jan 05, 2008 | RCA D52W20 52" Rear Projection HDTV-Ready...

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