Question about Projection Televisions

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Our Television works great. For the last couple of weeks our set will randomly shut off. It seems to come back on after it cools down if we fiddle with the power or tv/video buttons. We are thinking that the fix is probably something simple and if we can isolate the component and replace it, we would rather do that than invest in a bran new television. This unit was manufactured in Mexico in April of 2002 and we have only owned it for five years. One thing you should know. It was a floor display model and we got a great deal on it from a friend who worked at the Technique store just before they went out of business.

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Hi, I am Mtoddvan.

Your set goes off after use by itself. I take it it is a (CRT) a large TV not a flat screen?

**Warning even unplugged TV sets have high voltage Capacitors that store power & can hurt or kill you if you even get close to them.**

  1. As silly as this sounds replace batteries in remote. Some turn TV off when they start going dead.
  2. Unplug TV
  3. Most times you will find a solder track on the board that has discolored due to heat I would check here 1st for lose connections or burnt looking components.
  4. Look where the electrical wire comes into to around board may be losing voltage regulator use your nose you can smell a burnt component easily.
  5. Look for cracked components as well.
  6. Check that power button is making good contact in solder board wiggle gently see if it is lose may be losing contact.
  7. These sets are not easy to work on wiring is usually very short & tight Stay away from tube & connections to tube very dangerous.
Please rate & if I can help more let me know I am Standing by. Good Luck! Be careful.

Posted on Mar 09, 2009

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Hi there, this seems to be a cooling fan Assembly malfunction. the power board sends the electrical current to this device. the connection may be broken or the cooling fan may be dead. i would check the power board first. this may be the central issue then, i would inspect the cooling Assembly for faults. sounds like the power board itself is not receiving any air flow causing it to over heat and shut off.

Posted on Mar 09, 2009

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Hi, with projection tvs, they generally collect a lot of dust inside and you should take the time to clean this out every once in a while as it is obstructing air flow and is probably your problem as everything works fine. You just need to remove the back cover and remove the dust. If this doesn't work, let me know what brand and model of tv you have and I can suggest other areas for problems but I'm 99% sure dust is your problem.

Benjamin

Posted on Mar 09, 2009

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Hi....the reason is that some capacitor circuits would have got damaged. if you consult any electircian he would try to remove those lines by means of grabbing a magnet over that shaded area. so that ur problem might get solved.
thank u!!

Posted on Mar 09, 2009

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Have you replaced the bulbs?  

Posted on Mar 09, 2009

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