Cleaning mirrors and lenses on Sony big-screen projection TV
How can I clean (without calling a TV repairman) the mirrors and lenses on a Sony big-screen projection television? I had the mirror and projection lenses cleaned several years ago and it really improved the projected image quality. But, I'd like to do it myself -- that is it if the job isn't too big or risky.
Re: Cleaning mirrors and lenses on Sony big-screen...
It's fairly easy to remove the screws on the back bottom portion of any rear-projector television. when the bottom part is removed, you will see both the mirror and the 3 lens. isopropyl alcohol or windex should do an efficient job. a soft lens rag can be found at any camera store. i'd spray the lens rag instead of the actual lens or mirror when doing this job.
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Clean the small front projection mirror. That mirror can get dust on it and will cause the projected image to appear dull and dim and cleaning that mirror will usually restore the brightness and crisp details in the image.
Have you Cleaned mirror and top of all 3 tube lenses, then adjust the screen and focus to each Tube R/G/B After cleaning go to menu then turn color OFF then adjust all 3 tubes as close as you can to a Black and white picture then turn color back on.
Before starting, it is a good idea to disconnect the power cord for your TV from the AC wall socket or power bar. Remove the back cover from the TV. Unscrew and remove all the wood screws holding the back cover on. Grasp the bottom portion of the back cover and pull straight back approximately 4 inches. You may require assistance from another person if you are of small stature. There are two plastic tubular portions at the bottom of the back cover that insert into the particle board enclosure and if you don't pull straight back, you risk damaging the back cover and or the enclosure. The mirror is fastened inside the back cover and will come out at the same time. You will then have access to the CRT lenses and the mirror for cleaning. I would not recommend removing the mirror from the back cover for cleaning. It can be done while in place using a clean, soft, lint free cloth and a very mild soap and water solution. Just be certain not to leave any streaks. The lenses can be cleaned with a lint free cloth and alcohol or a camera lens cleaning tool. Take care not to touch the lenses with your fingers. See web link for lens cleaning tool http://www.opticsplanet.net/carson-lenspen-cleaning-tool.html .
It is very rare to have to clean the mirror. It us upside down so it does not collect dust. It does however collect nicotine if there is a smoker in the house. Some RCA mirrors are not glass and should not be touched. The lenses do get dusty and should be cleaned.
You should re-consider having a tech do that for you. The access is by removing the screen assmbly which are somewhat fragile. If you want to give it a try, pull the speaker grill off, it comes off just from pulling it, there should be five screws across the bottom of the screen assy, remove those, there is also an access door on the front of the set with four screws, that has to be removed to unplug the cable that goes to the screen sensors. The screen assy has to be lifted straight up an inch or two and then you can pull it forward away from the set.
As far as cleaning the mirror and lenses, you can't get to the face of the tubes so it's the top of the lenses that you clean, just use a soft lint free cloth (cloth baby diaper) and wipe the dust off the lenses, you can slightly dampen the cloth with water if necessary, same type of cloth on the mirror and you can use a glass cleaner on it just don't press too hard on the mirror.
Hi, Your TV requires service and cleaning of screen, mirror and 3 lenses (of CRTs) as looks dusty. Below is an exploded view how to take off front beznet assembly of this TV to clean inside with moist cotton cloth. Unplug TV before taking off front of TV.
The important thing here is cleaning the refelective mirror inside you tv .We have noticed in dirty areas the dirt on mirror makes blurry picture.THerefore you have to open back cover and than tp cover to clean mirror and also dont forget to claen c.r.t lenses ,sisnce they are mounted facing upward ,lot of dust sit on c.r.t lens there fore clean 3 of them r.g.b..And you will notice on picture diffrence.