Question about Sony Grand WEGA KDF-55WF655 36" Rear Projection HDTV

2 Answers

Screen discoloration on kdf-55wf655

I have a 2 year old KDF-55WF655 which is currently exhibiting discoloration in certain areas of the screen. The color varies in realtion to what's being shown on the screen, but in most cases it's a shade of magenta/pink, sometimes more of a blueish, but again it all depends on what's on the screen at any given moments. This same problem happened nearly at the same time as the lamp burned out, just before the 1 year warranty was up. Not surprisingly, the lamp just had to recently be replaced again, almost exactly 1 year later, so the timing is very much in sync with between two failing components. I don't have the record anymore from the first repair, but I THINK he replaced the optical block or the optical engine, but I'm not sure. I know he mentioned those things, but I'm not positive that's what he replaced (though I know for sure he also replaced the lamp at that time). The lamp failure was causing the TV to turn off and on constantly, with the red light flashing, nothing to do with the current discoloration problem. Unfortunately, this was my first LCD TV at the time and I didn't know at the time how essential it is to buy extended warranties with them >:(. I've since learned that lesson and have them on my other 2 LCDs. Anyway, if anyone knows for sure what the problem is, what part # to purchase and how to replace it I'd greatly appreciate it. Thanks!

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  • Eric Denney May 29, 2007

    This is NOT a 36" TV even though the website labeled it as such when I posted the model #.

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2 Answers

I had the same problem on a 50" Sony Grand Wega KF-50WE610. There were splotches that looked dim blue if they were against a white background, and dark blue if they were against green, but it was like a bruise. There was no rhyme or reason to it, it started in one place, got worse in another, but became unbearable when it crept down to the bottom of the screen, where it would make everything have a blue hue. I actually had another problem with the TV that required me to have the Light Engine replaced (blue pixel), and when the light engine was out, I could see a orange-red film of some sort had formed on part of the light engine that was facing where the lamp would be. I asked the technician about it, and he said all you have to do is wipe it off with a soft cloth, like the kind you use on the screen. He showed me with one of his cleaning cloths, and sure enough, it came right off. As we were putting the TV back together, I noted the location of this collection mirror, and it can be reached through the same opening you would use to replace the lamp. If you take the lamp out, the collection lens will be right behind. IF it appears to be covered by the orange-red filmy crud, just take a soft cloth, and wipe it off.

Posted on Sep 13, 2007

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In some cases , the optical block can be blown out with air. It must be remove to do so. if air dos not work , then the optical block will have to be replaced. I have had lots of luck blowning out the dust from the optical block with a air tank , cans of air dont have enough force

Posted on May 30, 2007

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1 Answer

We have had our KDF 55 WF655 set for 5 years and replace a bulb about 12 months ago but not the pixels have gone bad showing a blue shadow and now, even worse the center of the screen shows a green hole


Hi,it seems you are experimenting a light engine problem.This is how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo So basically the 3 Lcd chips that create the colors and image are going bad and that is why you get that color discoloration.Contact Sony or look for your light engine online.God bless you and your house!

Jan 05, 2010 | Sony Grand WEGA KDF-55WF655 36" Rear...

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.i have kdf-55wf655 my screen is get darker and


Well it could either be that your lamp is going out or that you have a weak ballast. This depends of certain things. If you haven't replaced the lamp, I recommend you do. If you already replaced the lampo and the image is still like this, it might be that your ballast is sending irregular voltgage, and that's why you get a dark image. discountdashmerchantdotcom

Jul 27, 2009 | Sony Grand WEGA KDF-55WF655 36" Rear...

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KDF-60XBR950 Grand WEGA


optical block bad please mark post as fixya!

2003-2004 Model Year Grand WEGA Televisions:

Models: KF-42WE610, KF-50WE610, KF-60WE610, KDF-70XBR950, KDF-60XBR950, KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620.

As technology evolves, Sony continually looks to stand behind the reliability of its televisions. It has come to our attention that a very limited number of televisions manufactured between 2003-2005, after a period of time exhibit a stationary scribble / random line pattern on the screen. Click here to see photos of this symptom.

As part of our commitment to quality, Sony is announcing that for any owner of this model television who paid out-of pocket expenses on or before May 26, 2006 for an estimate or repair service to replace the optical block for this specific issue, Sony will reimburse the customer by mail for his/her parts and labor expenses. To receive reimbursement, please follow completely the directions and terms on the claim form for reimbursement; all claims must be postmarked by May 31, 2007.

In addition, for any customer who later experiences this issue on one of the affected models, Sony will cover the cost of the optical block repair at no charge through September 30, 2007. All other terms of the Sony limited warranty continue to apply.

Feb 26, 2008 | Sony Grand WEGA KDF-60XBR950 60" Rear...

1 Answer

KDF-60XS955 Replaced Lamp. Slight discolor


Dont know if this is the same problem your having or not.




2003-2004 Model Year Grand WEGA Televisions:

Models: KF-42WE610, KF-50WE610, KF-60WE610, KDF-70XBR950, KDF-60XBR950, KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620.

As technology evolves, Sony continually looks to stand behind the reliability of its televisions. It has come to our attention that a very limited number of televisions manufactured between 2003-2005, after a period of time exhibit a stationary scribble / random line pattern on the screen. Click here to see photos of this symptom.

As part of our commitment to quality, Sony is announcing that for any owner of this model television who paid out-of pocket expenses on or before May 26, 2006 for an estimate or repair service to replace the optical block for this specific issue, Sony will reimburse the customer by mail for his/her parts and labor expenses. To receive reimbursement, please follow completely the directions and terms on the claim form for reimbursement; all claims must be postmarked by May 31, 2007.

In addition, for any customer who later experiences this issue on one of the affected models, Sony will cover the cost of the optical block repair at no charge through September 30, 2007. All other terms of the Sony limited warranty continue to apply.

Jan 23, 2008 | Sony Grand WEGA KDF-60XS955 60" Rear...

1 Answer

Bad picture


Sony wega blue dot or star pattern on screen
http://esupport.sony.com/perl/news-item.pl?news_id=206&mdl=KDF42WE655
Models: KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620
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http://splinke.googlepages.com/sonyrearprojectionlcdtv-opticalblock

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Sony wega KDF-42WE6 55


Sony wega blue dot or star pattern on screen
http://esupport.sony.com/perl/news-item.pl?news_id=206&mdl=KDF42WE655
Models: KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620
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Sony TV Screen


Is you model listed below?

Sony wega blue dot or star pattern on screen
http://esupport.sony.com/perl/news-item.pl?news_id=206&mdl=KDF42WE655
Models: KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620

Jan 15, 2008 | Sony Grand WEGA KF50WE610 50" Rear...

1 Answer

Loosing a Primary Color?


optical block bad please masrk post as fixya!

2003-2004 Model Year Grand WEGA Televisions:

Models: KF-42WE610, KF-50WE610, KF-60WE610, KDF-70XBR950, KDF-60XBR950, KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620.

As technology evolves, Sony continually looks to stand behind the reliability of its televisions. It has come to our attention that a very limited number of televisions manufactured between 2003-2005, after a period of time exhibit a stationary scribble / random line pattern on the screen. Click here to see photos of this symptom.

As part of our commitment to quality, Sony is announcing that for any owner of this model television who paid out-of pocket expenses on or before May 26, 2006 for an estimate or repair service to replace the optical block for this specific issue, Sony will reimburse the customer by mail for his/her parts and labor expenses. To receive reimbursement, please follow completely the directions and terms on the claim form for reimbursement; all claims must be postmarked by May 31, 2007.

In addition, for any customer who later experiences this issue on one of the affected models, Sony will cover the cost of the optical block repair at no charge through September 30, 2007. All other terms of the Sony limited warranty continue to apply.

Dec 16, 2007 | Sony Grand WEGA KDF-60XBR950 60" Rear...

1 Answer

Green Horizontal Lines on the Screen.






2003-2004 Model Year Grand WEGA Televisions:

Models: KF-42WE610, KF-50WE610, KF-60WE610, KDF-70XBR950, KDF-60XBR950, KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620.

As technology evolves, Sony continually looks to stand behind the reliability of its televisions. It has come to our attention that a very limited number of televisions manufactured between 2003-2005, after a period of time exhibit a stationary scribble / random line pattern on the screen. Click here to see photos of this symptom.

As part of our commitment to quality, Sony is announcing that for any owner of this model television who paid out-of pocket expenses on or before May 26, 2006 for an estimate or repair service to replace the optical block for this specific issue, Sony will reimburse the customer by mail for his/her parts and labor expenses. To receive reimbursement, please follow completely the directions and terms on the claim form for reimbursement; all claims must be postmarked by May 31, 2007.

In addition, for any customer who later experiences this issue on one of the affected models, Sony will cover the cost of the optical block repair at no charge through September 30, 2007. All other terms of the Sony limited warranty continue to apply.

Oct 19, 2007 | Sony Grand WEGA KDF-60XS955 60" Rear...

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