Re: spiderweb obstructing the projector on rear...
The back of the TV has a little plastic "pop away" peice, about 2 in by 3.5 in. It is just below the center in the middle. With a long cleaning tool, you can clean the lenses and the back of the screen, but do be carefull about scratching any surfaces! :)
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The mirror rarely needs it---access for it requires removal of entire screen unit------the lens (3) can easily be reached from rear with the back removed---you also at that time can look up to see if mirror is dirty or smudged.
Usually there are screws that hold the front part of the screen on. They are usually right on the edges in the back of the set. be carefull when you take the screen off. If by chance you may need to clean the mirrors inside the set. They are usually serface faced mirrors. meaning the mirror material is on the glass and can easily scratch or rub off easily.
you will need a manual screwdriver to remove the panel. You need a soft non-abrasive cloth to avoid any contact with your fingers and the lamp assembly.
Turn off the Projector. After the unit has cooled down properly, remove the power cord from the outlet..
Remove Lamp Compartment Door. The lamp compartment on projectors islocated underneath the projector unit. For Rear Projection TVs, the lamp compartment is located in the rear bottom left or right side of the TV.. Remove the screws and the lamp compartment door.
Remove Lamp Assembly. pull out the lamp assembly disconnect any power cords that is still connected to the lamp assembly. Put it aside and don't get it confused with your new lamp!
Clean Lamp Compartment. Dust gets everywhere and while you have the projector open, use a soft cloth to remove any loose dust from the lamp compartment.
Insert New Lamp Assembly. reconnect any power cables to the new lamp if present and slide the new lamp into the compartment in the same orientation that the original lamp came out.
Replace Lamp Compartment Door. Set the lamp compartment door back into place and securely screw in the door without screwing it in too tight
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.
this could be a contaminant inside one of the lenses, or possibly spider webs inside the tv.. This is a very common problem. Remove the back of the tv, you will be able to look around the back of the screen with a flashlight and see if there are any spiderwebs. at this time you should also clean your lenses and mirror with some glass cleaner . this will improve your picture as well.
Yes, I have seen this many times. Usually the best way is to remove the upper back cover and clean out the spider webs with a soft, dry cloth, but be careful because the mirror is mounted to the inside of the cover.