Question about Sony Televison & Video

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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.
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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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Posted on Jan 02, 2017

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Is there a process known to man that cleans windex streaks off an lcd screen?


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).
White vinegar (you may substitute isopropyl alcohol; either way, make sure these substances are diluted before they come near your screen).
A clean, soft cloth (never use any kind of paper product).
A spray bottle.

Directions:
In the spray bottle, mix the distilled water and alcohol/vinegar, in a 1:1 ratio.
Turn off the LCD display.
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.

May 12, 2015 | Televison & Video

1 Answer

My 2 yrs old granddaughter sprayed freeze on my tv screen, now has dark grey spots on it. What to do.


if its an lcd be carefull plastic front layer on them it may have marked the plastic try warm diluted soapy water on a cloth but only damp not soaking or were water is running down the screen.

Feb 11, 2010 | Panasonic Viera TH-50PX80U Plasma TV

1 Answer

Black smugges on screen


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


Please rate the helpfulness++++Thanks for using FIXYA

Sep 23, 2009 | Prima CV2011 TV

1 Answer

Spot on the screen


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
4. Repeat steps 2, and 3, until contrast is satisfactory.

To decrease contrast do as above, pressing Down arrow in step 3.

Hope it helps.

Sep 01, 2009 | Texas Instruments TI-84 Plus Calculator

3 Answers

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

please rate our help to keep the service online

Aug 18, 2009 | Televison & Video

1 Answer

Plasma tv scratch


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

Mitsubishi tv model wt 46809


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.

Jul 15, 2008 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

Dark Blotch on rear projection TV screen


usually these are caused by cleaning the screen with a damp cloth or fkuid rear projection tv's usually have two plastic screens separated by about quarter inch with bulbs between,one being a magnified screen.problem is,condensation can occur causing various blotches,letting the screens naturly dry out usually solves this but failing this you have to strip down and wipe them with clean dry cloth.be careful though the inside screen is very delicate.

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1 Answer

Screen


  • Direct-View - Older direct view TV's can be cleaned with glass cleaner and a paper towel. Newer tubes that may contain any special coatings, like an anti-glare coating, should be cleaned with a damp cotton cloth. If you are unsure if you have any special coatings, it is best to be safe and use the damp cloth.
     
  • CRT Rear-Projection - Before you can begin cleaning, you need to determine if you do, or do not have a screen shield. A screen shield is a hard plastic cover over the front of the TV screen. If you can't tell, give the front of the TV a light tap. Another way to tell is to check for ridges in the screen area. If you can feel ridges on the screen, then you do not have a screen shield. Rear projection TVs without a screen shield require a special kind of cleaner and rag. These are available for purchase at your local TV service center. Those that do have a screen shield should be cleaned with a dry or damp soft cloth. If it's extremely dirty, a mild soap may be used. Do not use paper products, such as paper towels, to clean the screen shield. Paper products can easily scratch the surface of the shield. Screen shields can have a tendency to streak while cleaning. If this happens, use a dry cloth and buff the screen in a small circular motions.
     
  • Microdisplay Rear-Projection - All microdisplay TVs have some sort of screen shield on the front. These TVs should be cleaned with a damp cloth. Microdisplays with a shiny screen shield can be cleaned with a mild soap if extremely dirty. Those with a flat screen shield should not be cleaned with any cleaning agents. Do not use paper products to clean the front of the TV because they could scratch the screen surface.
     
  • Plasma - Plasma owners should clean the front of the TV with a soft, damp cloth. The use of a mild soap for heavy cleaning is acceptable. The use of heavy cleaning agents could strip the special coatings on the screen, and paper products can scratch the front of the TV.

  • LCD Flat Panel - Be careful with flat panel LCD TVs! Use a slightly damp soft cloth to clean the LCD screen, then immediately dry with a soft cloth. Do not press hard on the screen during cleaning. Doing so could cause severe damage to the display. Do not use any cleaning solvents, such as glass cleaner or soaps, to clean the LCD screen. Paper products could scratch the front of the screen. If you have a pet or child that rubbed something on the screen that you feel could stain or damage it, contact your local TV service center for assistance. 
When dusting the TV cabinets, dust with a damp cloth or a mild cleaner. Paper products can scratch the surface of high-gloss cabinets, so avoid paper products. Heavy cleaners can strip the finish off of TV cabinets over time. When cleaning speaker grilles, dust with a dry cloth. Wet cleaners could stain or damage the grille cloth.

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