The in-Polarizer blue plate inside the len unit was damage by heat. I do not know where to buy the replacement. I ask Sony spare part they told me those part is no longer available

yes

you must change the lens. the cost is high. see the sony site for replace the parts.
Sergio

On a LCD PJ there is usually 6 polarizers. 3 IN Polarizers (one for each color...RGB) and 3 OUT Polarizers (again, one for each color...RGB). The blue polarizer that usually goes bad is the BLUE IN Polarizer.

It is usually a fifteen minute or job to replace the polarizer.

The blue hue on the side and dots are most likely a damaged (burnt light or optical light engine).

This is very common and you may want to contact Sony as there were programs for some models even if OUT OF WARRANTY.


The lamp in the set shines into a a L shaped engine with baffles and lens (red, green, and blue segments) and Blue is closest to the heat from the lamp and usually is the first place to get this type of damage.

I do not enjoy giving bad news but this is what I am sure is your problem.


If this information and a honest answer told you something you did not know rate this solution as very helpful as I do this here for free.


REGARDS, SD TECH

Hello. Here's the visual key to remember about projectors--LCD panels show their colors like this: RED lcd panel displays cyan onscreen(baby blue); GREEN lcd displays purple; BLUE lcd displays yellow. ( You now know where the displayed dust is!) The problem is most likely a burned blue lcd or polarizer filter in front of the blue lcd panel. This occurs when the dust filter isn't cleaned regularly or properly and heat builds up--yes, enough to "cook" the lcd panel or actually cause a burn to develop on the polarizer. The polarizer is just like a lens in a pair of good sunglasses. It is a small, extremely thin, pane of glass with polarizer material glued onto one side. When burned, it causes a "shadow" effect--that enhances the display of that particular color--in this case, yellow.--Hope I was of assistance!---Rick

reset the settings to factory default and change your cable. if that doesn't help, the polarizer filter on the blue lcd panel is fried due to excessive dust and heat. the optical engine will need to be replaced.

Its your blue polarizer going bad. This happens over time due to the excessive heat generated in the projector. The main problem is that your projector has organic LCD panels that degrade over time and in turn degrades your blue polarizer. The same thing happened to my sanyo Z2. It took 5 years for it to show on my Sanyo because I only use the projector for sports and movies. not daily tv watching. In any case, it isnt worth it to spend the money ti fix it...jut put tat towrds a new projector. The latest crop of LCD projectors almost all use in-organic LCD panels that last much longer. Hope this helps.

That sounds like a lens problem. The PS2 blue discs are read differently than the regular ones, and I am told the blue discs give out more information that the regualr ones, so your system is not able to recieve it. There are basically two solutions..

1). Get a "high quality" lens cleaner disc. The cheap ones can damage your system's lens.

2). Get a can of air that people use to clean out keyboards. You want to make sure you can see the lens and blow the dust off of it. Just blowing air inside the system will not work.

This is going to hurt..
You probably have a polarizer failing on one of the LCD panels inside.
There are 3 of these in LCD projectors, red, green, and blue. They all get the light fed into them, that light is then combined and fed through the projection lens.

You will need to contact Sanyo to find a service centre to replace it.

I just vacuumed out my 42 wega and it looks 100% better. Not for the faint of heart but it was free and only took me 2 hours.
http://repairs.sunnyoasis.com/sonylcdtv/