re purposing l.e.d t.v

Discussion in 'General Electronics Chat' started by scytzoh, Nov 8, 2015.

  1. scytzoh

    Thread Starter New Member

    Nov 8, 2015
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    hello this is my first post .i was wanting to ask a question about a l.e.d. tv that i have taken the broken screen out of and am useing for a light in my crawl space it works wonderfully nice and bright the only problem id that it times out and goes off..just like it would if there was no input from a dvd player or whatever is there a way to by pass this?? a connection on the board to solder together or wire to twist together or something?? thank you very much!
     
  2. #12

    Expert

    Nov 30, 2010
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    An LED tv screen times out with no video input. That is all the information you gave. Do you think all are the same and somebody here must know which wire will bypass the time-out function? This is not true. We can't even tell if you are working on a Russian tv or a Chinese tv.
     
  3. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    If its just the screen, it will be the led driver chip, possibly timing out after a no signal detection, or it maybe in sleep mode, without seeing what you have, its hard to give a direct result, can you show any pictures or model numbers,
    To override the no signal detection, you can input an ac signal about 15khz @1v pp.
     
  4. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    Sometimes possible.
     
  5. bwilliams60

    Active Member

    Nov 18, 2012
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    Provide make and model and perhaps we can tell you more.
     
  6. scytzoh

    Thread Starter New Member

    Nov 8, 2015
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    im posting pictures of the board if it might help if someone is able to mark the picture to show me what has to be done if it is at all possible it is a jensen tv i threw the back of tv away so i dont know model i can go get it and post when i do IMG_20151108_133255.jpg IMG_20151108_040834.jpg IMG_20151108_040834.jpg IMG_20151108_040834.jpg IMG_20151108_133224.jpg IMG_20151108_133224.jpg IMG_20151108_133247.jpg
     
  7. ian field

    Distinguished Member

    Oct 27, 2012
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    You can get a basic DVB-T box for literally pocket money price - most will display something on the screen with no RF signal.

    Maybe an old discarded VHS VCR - many have a rudimentary test pattern for tuning the TV to its modulator, usually a little slide switch next to the RF sockets.
     
  8. Brevor

    Active Member

    Apr 9, 2011
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    Or you could just hang a light down there and be done.
     
  9. scytzoh

    Thread Starter New Member

    Nov 8, 2015
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    that woulld just defeat the whole purpose of doing it ...thou there is no real purpose i just want to tinker and learn something is that wrong?
     
  10. #12

    Expert

    Nov 30, 2010
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    It takes all kinds to run the world. You just ran into a pragmatic person, like me. You can spend a week learning how to make an old monitor act like a light bulb, but I wouldn't. That doesn't make you "wrong".
     
  11. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    Looks like thats the combined psu and video input board, try inputting a video signal to the Yellow video socket, from a dvd or vcr, this should override the shutdown, you may have to select the video input channel also.
     
  12. ian field

    Distinguished Member

    Oct 27, 2012
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    Or a DVB-T box like I suggested several posts ago.
     
  13. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    Clearly the op isn't reading these posts...
     
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