How to clean behind the screen. there is cobwebs and dirt showing when the tv is on. making a bad picture thanks deb

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.

Basically, what you have is a convergence problem, very,very common amongst rear projection TVs. Here is a link to a website where the guy shows step by step including pictures on how to fix it yourself. If not, the repair costs anywhere from $250-400. Best of luck.
Greg

http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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!
    

Wile your in there you might as well clean the mirror and the lenses *and you will see a big change in your picture!
Remove screws from upper back of tv to access this area ..be carefull with the back the mirror is connected to it!Please rate this answer
Thank You!

Hello morsec,

You will need to remove the screws on the back of the top half of the TV set. This will allow you to remove the top rear half of the TV and give you access to the screen. Make sure you do not break the mirror that is attached to the rear of the TV set. Clean the screen with a damp non-abrasive cloth dry with a dry non-abrasive cloth. When finish replace the back of the TV and tighten the screws to hand tightness.

I hope this helps,

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

You will have to do some dissassembling of the cabinet to remove the screen and bezel assembly. If you are will to do this I can give you the directions.

  CRT Rear-Projection - Before you can begin cleaning, you need to determine if you do, or do not have a screen shield. A screen shield is a hard plastic cover over the front of the TV screen. If you can't tell, give the front of the TV a light tap. Another way to tell is to check for ridges in the screen area. If you can feel ridges on the screen, then you do not have a screen shield. Rear projection TVs without a screen shield require a special kind of cleaner and rag. These are available for purchase at your local TV service center. Those that do have a screen shield should be cleaned with a dry or damp soft cloth. If it's extremely dirty, a mild soap may be used. Do not use paper products, such as paper towels, to clean the screen shield. Paper products can easily scratch the surface of the shield. Screen shields can have a tendency to streak while cleaning. If this happens, use a dry cloth and buff the screen in a small circular motions.

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