Tip & How-To about Televison & Video

Solves alot of problems

I have found that dust and circuits do not mix. By takeing off the back and cleaning the dust out (use compressed air like computor cleaning air in a can) can solve alot of problems and save a repair bill. This will not solve all problems, but will help with minor problems and give your T.V. a longer lifespan. Hope this helps.

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Have a JVC HD-Z886 61inch, there appears to be some black spots behind the screen. Looks like dust, most at top of screen, not a big problem. Is there any way to clean behind the screen? When new the TV arrived with the screen not secured at the top, later had to have repair correctly attach top of screen to back of unit, possible dust entered at that point???


  • The most severe problem dust can cause in an LCD TV is a short circuit. This occurs when dust enters the television's casing and settles on one or more of the internal circuit boards. Enough dust can cause a short circuit, which will prevent the TV from working at all. In other cases, it will damage picture quality or prevent certain features from working properly.

    Because a short circuit can only occur when enough dust is present inside the TV, this problem happens after the TV has been in use for a number of years, meaning that it will not be covered under the manufacturer's warranty. In many cases of short circuits, repair is expensive, and you are better off buying a new set.
  • Image Quality
  • Dust can also have an effect on an LCD TV's picture quality without entering the LCD's casing. Dust that settles on the surface can distort the picture and decrease its brightness. While it's easy to wipe the dust away, use only a soft cloth and mild cleaning solution to avoid scratching the screen or causing permanent damage with caustic cleansers.

    Dust under the screen can be more difficult to clean. Using compressed air to blow the dust out is the best option, short of disassembling the set to clean the screen from the inside. Keeping the surface of the screen free of dust is usually sufficient to prevent dust from getting under the screen.
  • Control Problems
  • Another effect dust can have on a an LCD TV occurs when it enters the space around buttons, making it difficult to control the television. On certain sets, dust will cause buttons to stick or prevent them from engaging when pressed. Using compressed air to blow the dust out, or resorting to using only the remote control, will solve this problem.
  • Jan 24, 2011 | Televison & Video

    1 Answer

    Kensington 64213 Expert Pro Mouse poor tracking and will not move cursor to the left


    Cause:
    I found the cause and solution. Dust and debris settle in the up and down roller more so than the side to side roller because of the angle and gravity.

    Solution:
    You need to take apart the plastic housing and then dismantle the circuit board to get in and remove dust/debris from the up and down roller area. You will need a magnifying glass and small flash light to really inspect the area. I took a sewing needle and carefully removed all the debris on both sides of this roller. I then blew the area clean with my mouth. You should actually use a compressed air spray from an electronics store. After removing all the debris and air spraying it clean then assemble back to normal the circuit board and housing. Bingo! This solved the problem which is not an electronic problem but a mechanical one.

    Nov 25, 2009 | Kensington 64213 Expert Mouse Pro

    3 Answers

    Compressed air Vs vacuum cleaner for filters?


    don't clean with compressed air, you will contaminate the air you breathe. I just bought a small ShopVac with an 18-foot hose to clean exactly what you're describing

    Feb 21, 2009 | NEC VT470 Multimedia Projector

    3 Answers

    How do I clean coils?


    It is very important to clean condenser coils on forced-air refrigerators such as side-by-side and built-in models at least twice a year (if you have a refrigerator with the black coils mounted on the back, these coils don't require semi-annual cleaning). Here's how to do it: 1) Pull the refrigerator away from the wall and unplug it or, if it's a built-in model, turn off its circuit breaker. 2) Remove the cover panel to reveal the coils. On most models, the kick plate or top trim plate simply lifts off. You may have to remove a few screws to remove a back cover. 3) With a long, narrow nozzle on your vacuum, clean out all of the dust and debris (at an appliance parts store, you can also buy a special, long-handled brush that looks somewhat like a bottle brush for this job). 4) Replace the cover, and then plug the electrical cord back in or turn the circuit back on.

    Jan 18, 2006 | Hoover HCA331FFK

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