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A explanation that may tell you what is happening:
Some of their sets had this issue. The picture tube has a metal screen inside directly behind the stripes that make up the phosphor coating on the inside of the picture tube.
It is called a shadow mask. It has perforations that line up with all the stripes on the screen (look close--red-green-blue stripes all outlined in black--tiny).
What is wrong is not fixable even if the tube is replaced----the metal used in these sets for the mask contains iron which causes it to expand in areas with real bright scene changes--
No need to remove question as I saw it and answer questions for most TV area problems.
I actually ten years ago worked for Circuit City--saw at least 5 sets (all larger Toshiba sets) with this issue. On seeing first one called our support staff and someone explained to me the issue---that set was under extended warranty and since the customer was angry the set was "exchanged" for a brand new set and the old one was disposed of.
Spots in screen is commonly caused by defective LCD on the optical assembly. LCD replacement is very difficult. I suggest to contact the nearest service center at your area.
those are going to be dust spots on the LCD panels internal to the optical engine. i suggest that you take the screen off and take off the panel i nthe middle of the tv with 2 screws in it and there will be an area that has 3 metal fins covering thin orange ribbon cables. the 3 square objects at the end of those ribbon cables will be the LCD panels spray wiht air compressor unitl clean and that should greatly help your problem.
my sony is 4yrs also it has blue dots on the left side from top to bottom and a blue blob on rt. bottom corner no longer under warr. please send repair solution.
Uh Oh! blue screen of death. Your light engine
has warped a little from overheating and is distorting the picture.
My suggestion to you is to get on the phone with Sony and start
complaining, then keep complaining until they agree to pay for
it. Even if it is out of warranty.
You may have to get the problem diagnosed by a pro before they agree to pay for it though.
Hope ya fix it!
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