Question about Projection Televisions

5 Answers

After 3 to 4 min. the TV shuts itself off. It seems like it is tripping the AC connection.

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  • 4 more comments 
  • JMCarney2001 Jul 29, 2008

    The problem is not with a "Projection TV", It is a "PROTRON 26" LCD - PLTV-26. JMCARNEY2001

  • JMCarney2001 Jul 29, 2008

    It is wall mounted and is well ventilated. What can I do if you are correct and it is overheating.

  • JMCarney2001 Jul 29, 2008

    "PROTRON 26" LCD - PLTV-26.

  • JMCarney2001 Jul 29, 2008

    To be very honest, I have no idea what this past expert is talking about. Please, please, make it simple!! Thanks for any help you can give.

  • JMCarney2001 Jul 29, 2008

    But please, what is and where is the "power adapter"? Are you talking about the cord that goes from the TV to the outlet?

  • JMCarney2001 Jul 29, 2008

    Does anyone know of a TV professional in Ft. Lauderdale that would be able to fix my "PROTRON 26" LCD - PLTV-26.?

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  • Master
  • 4,234 Answers

Lets start with the simple things first. These sets have small fans built in to aid in air movement and cooling. These earlier models did not have any heat detection hardware other than a shutdown mechanism. I'd look at the fans and verify that they are clear and spinning.

Dan

Posted on Jul 29, 2008

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If you are concerned about the power the you should at least try unplugging all connections to the tv, including power, overnight. Then plug everything back in. It takes some time for the tv to reset (usually a few hours). If resetting does not work, then I concur with ginko. You should have a professional look at the tv.

Posted on Jul 29, 2008

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  • Master
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Its power supply may be faulty
The Psu are Just like any Psu using SMPS (chopper), so use normal PSU fault finding techniques
Start with , Any power from secondary of chopper transformer, at the diodes)
usual PSU voltages are 5v,3.3v 12v (the 12v feeds the CCF tubes power generators)
If yes the psu ok, If no check for 320v across mains smoothing capacitor
If 320v ok but no output, check for shorts on the output lines (schottly diodes)

Posted on Jul 29, 2008

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What is model number and make of your tv?

Posted on Jul 29, 2008

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  • Projection T... Master
  • 19,396 Answers

If it happens after some time it is usually a overheating problem.

Posted on Jul 29, 2008

  • 3 more comments 
  • Ginko
    Ginko Jul 29, 2008

    If it is a traditional rear projection tv, ovrheating problems are usually related with the ballast, you will need to call in a technician to check your tv.

  • Ginko
    Ginko Jul 29, 2008

    If it is lcd check that the power supply is not overheating and turning off, the tv usually have an internatl termic sensor as well, but a power adapter fault will be an easy fix.
    If the tv is connected to a receiver check also that is not the receiver giving a bad signal to tv and forcing it to turn off. To check this start the tv without receiver.


  • Ginko
    Ginko Jul 29, 2008

    If you are lucky you will fix the problem replacing power adapter, as this is a common problem with protron tvs. You can request replacement calling 1-888-257-8899, they should have part in sock , even if protron customer service is not the best (check here ).
    Check also your guaranty terms, if TV is still under warranty call the number printed in the last pages of your owner manual to validate guaranty and have tv repaired.



  • Ginko
    Ginko Jul 29, 2008

    If it is the power adapter replace it or have it tested and replaced if tv is under guaranty. If it is tv itself you need to have a techician testing your tv board, the external ventilation on tv means nothing, even if you live in Alaska your tv may develop overheating because of a bad component on board, also a bad capacitor or a component shorting out can cause the same.

  • Ginko
    Ginko Jul 29, 2008

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