kdsr50xbr1 lcd panel replacement in stock

In the end, Sony agreed to pay half of the $1,400 repair to replace the panel. The service tech, a Sony gold standard place, says the set is defective.

Optical block replacementIf you are sending your optical block in for rebuilding, the rebuilders will likely request that you leave all parts on the optical block for testing purposes, so you should only disconnect the remaining wiring that connects the optical block to other parts of the TV.

If you are doing a direct replacement of your optical block with a purchased part, the purchased part likely will not have a projection lamp or power supply block on it, so you will have to remove those parts from your current optical block and install them on the replacement.Disconnecting wiring from power supply blockThis step may be optional, if the power supply block must be transferred to a purchased replacement optical block. Undo the blue plastic-coated wire holders to release the two wire bundles. Disconnect the connectors shown with the dotted lines in the photo below. One, which presumably provides power, is disconnected directly from the power supply block, and the other is a regular wire connector.

Here is a picture of a replacement optical block for the KF-60WE610. Note that the lamp and power supply block need to be removed from the old optical block and attached to the replacment.

In theory, blowing air over the LCD panels and other internal parts could move some dust. In addition, the glass on the projection lens can be cleaned with lens paper and solution. Aerosol (canned) air is not recommended, as it can come out very cold and/or spray moisture, so extreme care should be exercised when using it (do this at your own risk). More thorough cleaning can be accomplished by further disassembling the optical, as described below.

Optical block disassemblyThe method described below requires even more care and patience, particularly the points where the LCD ribbon cables and the light path filters are removed. However, it will allow much more thorough cleaning of the internal parts, as it enables direct access to the filters and LCD panels.Note that Paul Patience has created another web site (Sony LCD Projection TV Cleaning Instructions) that describes this process on a KF-42WE620. It includes instructions and photos on accessing and cleaning the individual LCD panels, prism faces, and filters inside the optical block. Also note that, on the KF-42WE620 (and perhaps all 2003 Grand WEGA or "WE" models), the locations of the blue and red LCD panels are swapped relative to the KDF-55WF655 (and perhaps all 2004 Grand WEGA or "WF" models).Remove the centrifugal lamp cooling fan. It is held by 3 silver-colored screws, as indicated in the photo below.

The following photos show the optical block with the lamp fan, lamp fan mounting plate, LCD panel cover, wedge-shaped piece, and projection lamp removed (note the that the blue and red LCD panel positions are reversed on some models):

Next, remove the portion of the optical block that contains the LCD panels, prism, and projection lens. It is held by four silver-colored and four black screws, as indicated in the photo below. Pull this unit off the rest of the optical block, while carefully monitoring the ribbon cables to make sure they do not get caught. Note that the clear dome on the projection lens appears to be made out of plastic.

The following photo shows the gaps between the LCD panels and the prism through which it is possible to clean the surfaces. DO NOT attempt to unscrew the LCD panels from the prism faces, or you will likely lose your convergence upon re-installation:

**The 2005 3LCD models are unique in that they are the only models between 2003 and 2007 that have not had a Sony warranty extension.***The expiration date of the extended warranty was originally 10/31/2008, but, based in part on the settlement of a class action lawsuit, on 11/12/2007, Sony extended the expiration date to 6/30/2009.

Most likely, all of the green discolorations occurred due to the presence of improperly polarized light in the green channel, arising from defective green polarizers and/or SXRD panels. There is more recent evidence from a subsequent SXRD class action lawsuit that green haze can be caused by skin oil or debris introduced during the manufacturing process (presumably, optical block assemblers touching the parts with their bare fingers). However, Sony claims that they cleaned such optical block parts in a clean room prior to releasing them.

Sony further claims that the yellow stains in the 2005 SXRDs, which tend to start in the upper or lower right corner, were caused by a "microscopic material" in the liquid crystal panels, disrupting their uniformity over time during prolonged exposure to UV light produced by the projection lamp. Sony claims that the extent of the discoloration depended on the amount of microscopic material present in the panel, which varied from TV to TV, and the frequency of usage by the consumer. They also claim that service records indicate that the issue always appeared within the first 3,000 hours of usage, if it was going to happen.

The blue discolorations seem to be the most common, particularly in the earlier (2003-2005) 3LCD models, although they are also observed in the more recent 3LCD models, as well as the SXRD models. These discolorations can take the form of blue blobs, haze, lines, bands, dots, star pattern, etc. In some cases, the discoloration is centered around an oval-shaped anomaly in the middle of the screen. In many cases, the discoloration (e.g., haze) is most visible on a gray background, but in other cases, the discoloration is visible on a black background (e.g., blobs). Once they become evident, the discolorations tend to accumulate and spread across the entire screen over the course of a few weeks to months.

The precise cause(s) of these discolorations have not been revealed by Sony, but the problem is well-known in the industry.Thediscolorations tend to be bluish in color,because the parts in the blue light path (particularly the blue polarizing filters and liquid crystalpanels) aresubject to the highest energy light (including UV) and heat. Photochemical and heat-based degradation of the blue polarizing filters can allow stray, improperly polarized blue light to pass through the blue LCD panel and onto the screen, leading to blue blobs on images that should be black. Photochemical and heat-based degradation of compounds in the blue LCD panel (e.g., the liquid crystal itself and/or alignment layers) can cause irregular distribution and/or alignment of the of the liquid crystal. This can lead to improper polarization of blue light as it passes through the damaged areas of the panel, resulting in the projection of stray blue light onto the screen.

There is a correlation between the appearance of the blue discolorations and the failure and/or replacement of the lamp. This may be a coincidence of the average life span of the lamp and the rate of degradation of the optical block parts, or changes in the lamps may accelerate the degradation or make it more evident. For example, the light spectrum emitted by older lamps may become more damaging, and/or the increased intensity of a brand new lamp may make the discolorations more visible or hasten the degradation of the already weakened parts.

images--typically called burn-in on older CRT and plasma displays. For example, this can occur in areas of black bars (e.g., letterboxes), in news ticker areas, or when pausing a program on a DVR.As the liquid crystal panels degrade over time, the

While the 2003-2004 3LCD models tend to have primarily blue discolorations, as described above, they can also suffer from stains in the yellow range, and this seems even more common in the newer 3LCD models (e.g., 2005-2006), particularly the A10s. These discolorations tend to start on the edges or appear within oval-shaped anomalies, and to spread over time. Similar to the yellow stains in the SXRDTM models, the yellow color arises due to light being completely blocked in the blue light pathdue to photochemical and heat-based damage (e.g., darkened areas on the orange-colored polarizing filter in the blue light path). The improper blockage of blue lightleaves the predominantly yellow light from the combined green and red light paths. TriState Module sells the orange-colored polarizing filter for the blue light path and reports that it can fix yellow discolorations.

On top of the high risk for blue discolorations described above, some2003-2004 3LCD modelsare also susceptible to developing an opaque, non-moving pattern on the screen, which is particularly evident on white or light backgrounds. This is referred to variously as stationary scribble, squiggly, random line, or road-mapping, and tends to be a solid color such as yellow, purple, or blue-green on a white background, but it varies somewhat depending on the specific color of the image on the screen.The problem tends to grow worse over time.

For the most part, this problem seems to have been caused by defective materials in a specific lot of LCD panels that were installed in the optical blocks, whichare particularly sensitive to damage arising from hot-cold (on-off) cycling. The color of the scribbles likely correlates with the light path with the damaged LCD panel. For example, damage to the blue panel may selectively block blue light in the damaged areas, leading to a yellow scribble (green plus red), damage to the green panel may lead to a purple scribble (blue plus red), or damage to the red panel may lead to a blue-green scribble. In some cases, different colored scribbles appear in different areas on the same TV, suggesting damage to multiple panels.

There is some evidence that leaving the TV on for an extended period (e.g., several days) can, at least temporarily, resolve or reduce this issue, perhaps by causing the defective panel to heat up, but this is not a complete or permanent fix.

The optical blocks are not sealed, so they are subject to dust accumulation, and this problem seems to be particularly frequent when the TVs are used in dusty or smoky conditions. Also unlike the rest of the issues described above, there have been no warranty extensions or class-action lawsuits for this issue. It may be possible to reduce the appearance of the blotches by cleaning the optical block with compressed air. Unfortunately, cleaning will rarely eliminate the problem, the problem will likely return over time, and it appears that the dust can get burned into parts within the optical block during prolonged exposure to the heat of the projection lamp, making cleaning ineffective. See the Optical Block Replacement/Cleaning page on this site for additional information.

For reference,in addition to liquid crystal projection technology (3LCD andLCoS/SXRDTM), othernewer technologies at the time included digital light processing (DLP) projection,plasma flat-panel,and LCD flat-panel. In the large screen market, DLP and plasma were in direct competition with liquid crystal projection in its heyday, and LCD flat-panels have overtaken the market as prices have come down on larger panels.

An industry group of LCD projection manufacturers called the "3LCD Group" was formed in 2004 to help market the 3LCD microdisplay technology. Sony is a member of this marketing group, and, along with Epson, accounted for most of the production of the LCD microdisplay panels used in the projection models. Although the current 3LCD Group web site refers only to front projectors, it included rear-projection TVs when they were in production. For example, see this version of the 3LCD Group web site archived in January of 2005. Here is an excerpt from a 1/7/2005 3LCD Group press release:

“As the U.S. market leader in microdisplay televisions, Sony has always been committed to providing consumers with video products that exceed their expectations,” said Mike Fidler, senior vice president in Sony Electronics’ Home Products Division. “3LCD technology fulfills this role by offering an ideal balance between superior performance, overall reliability and manufacturing efficiency.”

Liquid crystal projection TV sales and marketing efforts attempted to steer customers away from competing plasma TVs by citing a short 10,000-20,000-hour lifespanof the plasma tubes (less than 10 years at 3-6 hours per day).In addition, the longevity of competing DLP projection TVs was questioned based on the use of moving parts (DLP technology uses a spinning color wheel with millions of hinged micromirrors). Consistent with this, Sony and its 3LCD Group have released marketing statements such as the following:

It is generally accepted that liquid crystal flat-panel displays have an expected life span of about 60,000 hours(about 27 years at 6 hours per day)(e.g., site 1, site 2, site 3). The liquid crystal microdisplay panels in Sony"s 3LCD and SXRDTM TVs are a bit different than flat-panels. However, Sony and the 3LCD Group do not differentiate LCD flat panels and microdisplays when speaking about reliability. For example, the following statement can be found on the 3LCD Group web site:

Reliable, Road-Tested Tecnology: LCD technology surrounds us – HDTVs, PDAs, mobile phones, monitors and more...this powerful and road-tested technology is an optimal way to achieve sharp, beautiful images. 3LCD systems are reliable and use a simple optical design: 3 chips and 1 prism.

Furthermore, the estimated 60,000-hour lifespan of an LCD flat panel is actually based more on the longevity of the fluorescent back-lighting than the liquid crystal components themselves. So, if the lighting systems were replaceable on these units, the lifespan could, theoretically, be much longer.In liquid crystal projection systems, the lamps are, in fact, user-replaceable, and Sony has exploited this to further promote the longevity of the technology. They strongly promoted that their TVs only needed a lamp change every several years to restore the TV to a like-new condition. Here are some quotes from some of Sony"s marketing:

Easy Replacement Of UHP (Ultra High Pressure) Lamp. Sony innovation once again takes the lead with its proprietary new UHP replacement approach. Now you don’t have to worry about time eroding your TV’s picture quality – with a few simple twists of the screw, you can replace the old lamp and restore your Grand WEGA’s performance to full, vivid glory. Thanks to this convenient feature, you’ll enjoy the same high level of quality and enjoyment for many years.

The Fountain of Youth - User-Replaceable UHP Lamp. In the past, the gradual loss of picture quality was just part of owning a TV. Once the picture got to a point where it was unwatchable, the TV was replaced and the process started over. Sony recognizes the investment in time and money that a TV represents. That is the reason that Grand WEGA comes with an ingenious user-replaceable UHP lamp. After countless hours of enjoyment, simply replace the lamp and your Grand WEGA is as good as the day you bought it. In fact, with Sony"s renowned quality, Grand WEGA may be the last TV you ever own.The implication from these quotes is that liquid crystal rear-projection TVs could have an even longer life than a liquid crystal flat-panel display, and even CRT-based TVs, due to the user-replaceable lamps. In fact, a "white paper" from Sony on their projection systems directly suggests that liquid crystal microdisplay (fixed-pixel) projection panels offer "far longer life" than CRT-based TVs (e.g., see page 23):

CRTs have phosphors that are subject to burn-in when an image stays on the screen too long...Fixed-pixel projector display panels are immune to burn-in, offering far longer life. And the SXRD panel is particularly robust.However, unlike flat-panel liquid crystal displays with non-damaging fluorescent back-lighting, the UHP lamps in Sony"s rear-projection TVs create substantial direct heat, direct light (e.g., ultraviolet), and indirect heat (produced by conversion of reflected light). This damaging energy is focused on the small filters and liquid crystal panels within the optical block, significantly reducing lifespan.

The approximately 6,000-10,000 hour life spans seen with many of Sony"s optical blocks, thus, does not compare favorably with the marketing claims of superior reliability and longevity over plasma and DLP, let alone with the language in Sony’s marketing material that the TVs should last for “countless hours” (far into the future), and that, with lamp replacement, it could be the last TV you ever need to buy.

Just ordered my replacement 65″ Panasonic plasma to replace my yellow KDS-R60XBR1. My friend’s XBR2 also went yellow a month or so before mine. I’m not interested in “deal”on a discount on a smaller set I never wanted and we knew nothing of the class action lawsuit. People tried to warn me that Sony is a company that treats its customers callously and doesn’t know how to do the right thing. Lesson learned. Never by Sony anything again. Tell a friend.

I just hung up with Sony on trying to get information about a green hue I have on my SXRD TV. The support tech actually lied to me 6 times before I was able to get ‘Dennis’ to admit the truth. Dennis stated that Sony has never had an ‘Optical block’ problem, that there had never been a class action suit on this issue, that they have never offered any kind of replacement, and the the internet had lied about all of this. I asked to be moved to a higher level and he stated that when he would transfer me that it would go to someone else of his level with the same information. How can you trust a company that lies to you right from the beginning?

I contacted sony about my KDS55A2000 with green tint. I purchased it 2006 and paid 2500.00.I am now offered a 55” priced on their web site 1100.00 for 575.00 + tax. I have a 20 yr. old magnavox 300.00 still working. Sony represented this TV to last a very long time with an occasional bulb replacement.They by there standards say this TV is worth 600.00 today.I GOT 5 YRS SERVICE or 500.00 per year.I was told if I didn”t agree to the deal!!!!! within 7 days I would lose this option.Yesturday morning I agreed with a very sinking feeling.I own 2 newer sony 46” TVs cameras play stations mp3s hell all of our electronics are sony.I am now of the belief that SONY has gone cheap with the manufacturing of there products.I took there deal but I won”t forget.I have a lot of friends and a bit of persuasion.Help from sony or I quit!!!!!!!!!

I just worked with Sony on my 55″ SXRD tv issue that included a yellow tint to the picture. The offer I got was for a 55KDL500 for $300 or a 46″ model for $25. I took the $300 55″. Shame though that the picture on the new LCD is not as clear as the SXRD when working well.

Have a KDS-R60XBR1 with optical block problem. Called Sony about two weeks ago. They provided an event # and asked that I provide a pic of the TV with the event number and the seriel number tag from the back of the tv. You must carefully remove it and tape it on the paper. I took a pic of the tv during a Ford commercial which has lots of white screen space which clearly shows the green halo. I’m now waiting for the 60EX700 LCD HDTV to be shipped ($325+tx). Thanks everyone for your posts.

I have owned a 60″ A2000 for approx. 3 1/2 years and have just recently had the optics replaced for the sixth time. I finally got fed up enough to contact Sony right before the fifth replacement and was told at the time that they would do nothing for me other than replace it again. After finding that the fifth optical block was bad right from the get go, I contacted them again. I expressed that aside from the incredible inconvenience and work time lost from having to constantly be home for the repairman, I was concerned that I would soon be out of any kind of warranty and be stuck with a tv that had never consistently worked right. They stated that they would get back to me within 72 hours. After a week had passed, I called again and was told that I would receive a call back in one business day. Four business days later, I called again. I was then told that they would contact me at an undetermined future time. When they finally did get back to me they wanted me to fax my original receipt to them so that they could then offer me some “great deals” on a new tv.

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