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There is a thin piece
of glass covering the actual picture tube. There is two small metal
clips at the top edge of the glass. Using your thumbs, lightly push in
on the glass and slide the two metal clips inward about 3/8". then tip
the glass outward towards you carefully. remove completely to clean with
a lint free cloth, or some newspaper and Windex.
THE best way to do this without trouble is to unplug the set and remove the back cover.
You need either a swiffer type duster or I have used a cardboard tube with paper towels taped to it. You can reach inside and get all the webs and debris out--do not apply heavy force if you wipe the inside of the screen.
This is a classic and common problem--the front screen can be removed but it is really more difficult and it is easy to damage it when you can get the same result by going from the back.
When you get the webs out, note the three large black lens--clean them with a lens cloth or a paper towel with glass cleaner sprayed on it.
This should be done once a year--the lens are your light source and if even a bit dusty the picture will be darker and duller than it should be.
Let me know if you have questions BEFORE YOU ATTEMPT THIS.
If this information told you something you did not know, rate this solution as "very helpful" as I do this here for free.
Use a soft lint free cloth and any glass cleaner. The trick is to spray the cloth instead of the TV screen. Spraying the screen itself could let cleaner run too far down and on to the circuit board. Thanks for using fixya.
Take the remote control apart, batteries out, pop apart, (any screws? - remove them.) Clean the rubber contact pad with mild dish soap and water, pat dry. Clean the circuit board with a soft towel and windex or equivalent. Clean the push button holes in the top cover with q-tips and windex. Reassemble, batteries back in. Test...Does this help?
Have you ever cleaned the set front glass with windex or glass cleaner.Sometimes the fluid runs down before you can wipe and lands inside right on top of the push buttons that control ( CH,VOL, MENU, etc.) If this happens you can get this trouble. If you up to it take the cover off and look at the board just under the front edge of the crt. If you see green or grey residue you probably have to remove that corresponding TAC switch. You can just cut out and use the remote for that function.
It may be that the switch is worn out and needs to be replaced. Or your TV may have "Windex syndrome." This happens when people clean the screen by spraying on Windex and wiping it off like cleaning a window, and some of it runs down and gets on the circuit board front edge where the switches are. It can cause corrosion which leads to intermittent operation, strange behavior, or total failure of buttons. Best cure is to remove the board, inspect it, clean any corroded connections, replace the switches, and check the values of some of the small parts in that area. They can all be affected.
there is an antiglare film on the tube. the only way to fix this is to replace the crt itself, but this cast more than the tv. i would find a strong cleaner and rub off as much as you can. it is possible i have done this myself.