Shiny spot on screen. Please help me clean it! - AVS Forum
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post #1 of 7 Old 01-25-2002, 10:23 PM - Thread Starter
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Oh no.

My setup:

Sony 1272 CRT FP projecting on a 45x80 Da-Mat (smooth, white, vinyl surface) screen.

My problem:

When I first set up my theatre room (6 mos ago), I though I was being smart by using post-it notes. I cut tiny small strips to mark the center of each side and used two tiny strips to make a "+" in the dead center. I placed them on the screen, while I set up the system (like two days).

I usually don't sit dead center in the couch - but last night I did... and for the first time noticed that where the post-it pieces had stuck they left a shiny film on the screen.

I tried using some scotch tape to remove the shiny sticky stuff, and was successful. But there is still shiny marks that can be seen. It feels smooth now but remains shiny.

What can I use to clean the surface of my screen? I hope I haven't damaged the screen with permanent shiny spots.

Please help

Paul
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post #2 of 7 Old 01-27-2002, 08:15 PM
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i recently purchased some cut-to-order da-mat screens. it came with instructions for cleaning. 100% cotton cloth, plain water, wiped in one direction, not in circular motion. For sticky spots they say you can use denatured alcohol applied in the same way.
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post #3 of 7 Old 01-27-2002, 09:02 PM - Thread Starter
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Thank you for the info.

I did try some water on a very soft cloth. It *seems* the sticky stuff is gone, but a shiny spot remains.

I hope somehow the properties of the vinyl have not changed - and that the "texture" in that spot is not gone.

Does anyone know if this is possible?

Thanks

Paul
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post #4 of 7 Old 01-27-2002, 09:55 PM
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I can't imagine that the adhesive on a sticky note would permanently damage vinyl. I have a very shiny spot on the edge of my screen but I know that it happened when I accidentally 'melted' the vinyl while removing wrinkles with a heat gun.

Have you tried the denatured alcohol?
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post #5 of 7 Old 01-28-2002, 12:30 AM - Thread Starter
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Err Um.

No, maybe I'll need to go to a WalMart or drug store.

Is rubbing alcohol close enough? That's all I have around the house. I don't know the difference but want to be very careful to use the right stuff before applying anything to the screen :(

Paul
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post #6 of 7 Old 01-29-2002, 07:21 PM
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Denatured alcohol is as close to 100% ethyl alcohol as you can get. Ethyl alcohol will not distill to 100% so methyl alcohol is added to further aid in the distillization process( do not drink). Rubbing alcohol is isopropyl alcohol(don't drink either for that matter). I would follow their instructions to the letter since the solvent properties of each may be different .
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post #7 of 7 Old 01-29-2002, 09:59 PM - Thread Starter
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Thanks Art for the clarification.

I got some denatured alcohol today, but it didn't work.

Also I called Da-Lite and spoke with a rep - he seemed to think indeed somehow the residual adhesive the sticky-note left on the screen cohered with the coating (there is a coating on the vinyl) and must have removed the coating when it came off.

He also said there is no way to restore the coating. Under the coating the vinyl is shiny.

The plus mark is there for good, slam dunk in the center of my picture :(

Paul
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