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Cigarette Stains Removable?

P5138
11-13-2007, 08:19 AM
A friend of mine just gave me his old 42" Sony LCD Projection TV and I have found a pretty annoying problem:

My friend smokes like a chimney. The set itself still emits a smokey odor (probably will do that for another week or so), but the only real problem is the outer screen. Due to the constant exposure to cigarette smoke for almost 5 years it has noticeable yellow gradient, especially when you put a pure white picture on the screen. [Even if he did clean the screen quite often]

Is there any way to clean the outer protective screen that might actually remove those stains or will I need to replace it? And, if so, how much money should I put aside to get that done?

Loves2Watch
11-13-2007, 08:39 AM
Firstly I believe your set is SXRD (LCoS) rather than LCD. As for the screen, I would contact Sony as they will and can guide you as to the proper way to clean the screen. You certainly don't want to use anything that might harm or damage the screen. Go to the source (Sony) for the solution and you should find a perfect solution.

P5138
11-13-2007, 08:54 AM
Thanks for the suggestion, I have contacted Sony Tech Support.

The model number is KDF-42WE655, which, according to Sony's guide, is an LCD. Actually I was reading the guide on the TV when I noticed the discolorations on the page :p

I've spent a lot of time using Projection TV cleaner and it's just not strong enough to unstick that tar. Hopefully Sony will have a good (cheap, quick) solution.

Loves2Watch
11-13-2007, 09:51 AM
Good, I'm sure they will find a solution for you. And yes, you are correct it is a LCD rear projection TV. Made an incorrect guess without having the model number, sorry.

just4you2know
11-14-2007, 11:39 PM
:rolleyes: WELL THERE ARE SOME GOOD CLEANER ON THE MARKET TODAY ANYTHING SAFE FOR A PROJECTION SCREEN IS OK CHECK AT RADIO SHACK,,,IF IT DOESN'T CUT IT TWO CHOICES THEN FIRST IS THE SCREEN (FRONT) IS CHANAGEABLE ABOUT 200.00..OR THE LITE ENG/COULD BE BAD ALSO BECAUSE OF COLOR DISCOLORATION.DUE TO SMOKE YOU CAN TRY CLEANING IT..BY A QUILIFIED TECH/ONLY..OR CHANGE THE LITE ENG..PRICE-IEE..FROM 1000.00 TO 2700.00 DEPENDS ON WHICH MODEL..LOTS OF LUCK...:cool: : THE doctor..

PS: :crying: THE ANSWER TO LONG LIFE ON THE DLP LCD ARE CLEAN ENVIROMENT..ALSO NOT ONLY SMOKING HAZARD TO YOU HEALTH BUT ALSO TO YOUR TV//DOC

P5138
11-15-2007, 06:02 AM
Thank you for the help. I have now found the problem isn't on the screen, it's on the lense; this explains why I just couldn't clean it up :p

I pulled on the front screen at a corner and noticed the stains moved with the picture as it distorted. So my best guess (with no previous experience) is that dust, dirt, grime, etc. is on the lense (since if it were on the mirror it would move in the opposite direction, right?). I guess I have just learned the hard way that the screen reflects light differently than my old CRT set (I could've sworn the smudges were on the screen.)

After looking at the service manual, I'm going to let the tech I've already called handle the actual cleaning. Unless there's a trick to disconnecting the wires running to the screen without having to pull out just about every component in the TV...

Loves2Watch
11-15-2007, 07:45 AM
I hope that all works out for you. Please let us know the results and what was actually done.