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Screen clatiry I wsa recently given this TV and the screen has dark spots and smudges on it and I tried cleaning the screen with a damp cloth and some mild soap (recommended by SONY) and I still have had no luck. the screen still has a "dirty" look to it with smudges on it. Should I remove the plastic front screen and clean it? It was stored in a garage for a few months if this is any help?

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  • Sony Master
  • 3,459 Answers

Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
Screen clatiry - 701cb04.jpg

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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.
Screen clatiry - 578ba6c.jpgsrc="http://i.fixya.net/uploads/images/578ba6c.jpg" alt="578ba6c.jpg" class="h_mi" />
TV set after fScreen clatiry - 65af323.jpg

6Screen clatiry - 2c07611.png class=

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Posted on Feb 13, 2009

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6ya6ya
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Posted on Jan 02, 2017

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How to Clean an LCD Screen
So, first of all, let's decide what we don't use to clean it:
Anything containing bleach or ammonia, such as Windex. That will react with the plastic and make the plastic screen become cloudy and discolored.
Anything sharp, pointy or abrasive.
Your easiest choice is one of those LCD cleaning solutions they sell in places where they sell computers. But they're expensive, and why bother when you can make your own solution for next to nothing?

What you'll need:
Distilled water (available at your supermarket; tap water leaves streaks and minerals).
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A clean, soft cloth (never use any kind of paper product).
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Directions:
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Spray the mixture onto the cloth, never directly onto the screen.
Wipe gently - oh, so gently - from top to bottom. Do it horizontally, too, if you think that leaves a cleaner result.
Let the screen dry before turning it back on.

Hands Off!
Fingers leave dirt and oil smudges that must be cleaned off. Also, every time you touch the screen you risk doing damage to those tiny creatures inside that hold the colored flashlights. Keep your fingers to yourself.

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Inside or outside? If outside wipe them with a damp cloth. If these smudges are on the inside of the screen it is a screen fault and will get progressively worse. Can you see them when the set is on as well?

If the set is under warranty claim it now


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Hello,
The screen of a calculator is pretty fragile. If you cannot remove the smudge by gently cleaning with a lightly damped, soft cloth do not try any solvent. I just tried isopropyl alcohol @ 50% per volume on my TI83Plus and it did not hurt the screen.

You can play with the contrast (increase or decrease).
To change contrast you perform the following manipulations.
1. Turn calculator ON
2. Press [2nd] key, then release it.
3. Press Up arrow, then release it
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To decrease contrast do as above, pressing Down arrow in step 3.

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Samsung LCD screen cleaning technique


Hard crusties? what do you do to have this type of matter on the screen?

Be carful with what you use on the screen, a damp cloth is permissable. This does not mean spraying liquid directly on the screen and wiping it

Spray into the cloth or dampen cloth and wring out well. Do not let any excess water drip down the screen especially if it gets into the TV via the outer frame around the screen.otherwise poof it will never work again

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Things You’ll Need:

* Television screen cleaning products
* Cleaning schedule
* Microfiber cleaning cloth

Clean Your HDTV Screen Properly
Step1
Read the warning labels on all your household cleaning products. Even glass cleaners might not be suitable for use on an HDTV screen, so check the manufacturer's warnings before you apply anything to the screen.
Step2
Keep chemical cleaners away from your HDTV on cleaning day. The harsh chemicals found in most common cleaning products will actually cause more harm than good.
Step3
Leave liquid cleaners under your sink when cleaning your HDTV screen. A liquid cleaner, whether it be water or a chemical cleaner, will drip down the screen and work its way into the interior of the TV, causing damage to your HDTV. You will be able to easily recognize when this happens, because your screen will develop smudges.
Step4
Use a cloth to clean the HDTV screen. Ideally, you should use a cloth that is recommended for HDTV screens, computer screens and other electronics. The word "microfiber" may be imprinted on the packaging.
Step5
Wet the microfiber cloth slightly. Just a hint of dampness is all you need. If water runs out of the cloth, then it's too wet and will cause smudges.
Step6
Develop a regular cleaning schedule for your HDTV screen. If you dust the screen daily, or at least several times a week, with your microfiber cloth, no other maintenance should be necessary. Not only will frequent cleanings make caring for your HDTV easier, but they will also enhance your viewing experience.
Step7
Prevent messes by asking family members and guests not to touch the television screen. You should also try to make sure children with sticky fingers do not come in contact with the screen.
Step8
Use a high-end cleaning product if you feel that regular dusting is not sufficient. Top-of-the-line television cleaning products are ideal for use on all HDTV screens, plasma screens, projectors and are safe to use around children and animals.

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1 Answer

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Good Day, sam;
Sam it depends on "smudge".
If it's an oily type; then a mild soap, like dawn, on damp, warm soft cotton type cloth may remove it.
There are products found in most large best buy, circuit stores that sell a screen cleaner. It's sold in a small spay bottle, about 2-3 ounces. Always spray onto cloth NOT screen. Always wipe/clean with up & down strokes, NOT side to side or at an angle.
If the screen is smudged after attempts of trying to 'cleanning' a scratch, then only replacing the screen will fixya problem, cost will be in the range of $100.00-$250.00.
Good Luck, hope this was helpful, big IRISH.

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