Cobwebs in the screen

you need to take the top back off the tv. and mind the glass at the top of the rear part top it is very fragile, most of the projection tv have a side cover on each side so you can clean the rear of the screen, as you not said what type screen you have i cannot tell you further.

Screws behind the bezel. easy to remove, a pain to re-install, best to have a tv shop do it

It is in the top half of the set. You will have to remove the top back cover to clean it.

I had the exact same problem and the fix is easy to do. Unplug the TV first of all and wheel it out so you can easily get to all of the rear screws.

1. Remove the screws from the ventilated back panel (the piece of wood with a bunch of holes in it surrounding the AV connection panel.
   
2. Remove the wood panel you just unscrewed.
3. Remove all screws from the upper plastic case on the back.
4. Remove the back plastic case carefully. This is a little tricky due to two metal pins that it hangs on. Lift it upwards and you should be able to free it from these pins
5. At this point you should be able to see the entire workings of the TV, and consequently the massive amount of dust that has accumulated.
6. Carefully take a vacuum and remove all the cobwebs, taking care not to bump the mirror or the lenses.
7. First, I used some compressed air to clean off the lenses and then used a clean microfiber towel to remove all the dust from the lenses, the mirror, and the screen on the inside. Make sure the part you are wiping the mirror and lenses off with is free from any dust or dirt or you will risk scratching them.
8. Reverse the dissasembly process to put the case back together.
9. I went through the convergance settings at this point and found that they were all out of calibration and as such recalibrated them. Use the mulitpoint calibration for best results.
10. Enjoy a much cleaner brighter TV!
    

take the back cover off as the mirror is attached to it then you can clean the mirror and the inside screen and colour gun lens's (3off) there should be 8 to 10 screws around the outer edge of frame and about 6 to 8 holding the screen portion to the chassis

i did mention this in my problem post incase it can help you but in the event where you overlooked it try some dust-off it may help you better than it did me

You can clean the screen from the back - take off the access panel. I clean mine once a year whether it needs it or not.

You'll need to have the frame of the tv either opened so you can reach in there or the top mirror block assy will need to be removed to get inside to the screens. You may want to have a Sony ASC do this type of repair. Call Sony for a referral.

hey,
to packerfan. yesterday i did some thinking. i had the same problem w/ my toshiba 57". cobwebs in the viewing screen. i found the solution to be simple. take the front panel off. it's just held on by some clips. remove the black cardboard cover that protects the wiring. it's simple just w/ a screwdriver. attach a feather duster w/ duct tape to a 2 ft. dowel or longer if your arms are short.there are several places you can go up to dust. i found that if you clean 1/2 of the screen then the other 1/2 you should be done all tolled in about 10 mins. presto! my screen has never looked so good.too bad it's taken me 3 yrs. to figure it out. hope this solution works for you as great as it worked for me!!!

1) Remove rear cover. Slide out pressed-board light shield.
2) Remove any cobwebs behind screens-(soft cloth on pole)
3) wipe lens caps with soft cloth
4) re-assemble