TV cooling fan

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  • vbrad511
    Senior Member
    • Feb 2015
    • 70
    • United States
    #1

    TV cooling fan

    I've got a couple Samsung led tv's with the dreaded "tab bond" issue. I've got one of them band-aided and been working fine for months, but I haven't put the back back on. It generates a bit of heat, and a while back I mentioned on the forums about installing a couple cooling fans (when I was trying to educate myself on a different repair). A guy chimed favorably so I'm reasonably sure it can be done, loadwise. The issue I'm taking is noise. I've got 300mmx10mm fans, and 40mmx10mm fans. They both run nice and quiet when I've got them on a 9volt source, but make too much racket on a 12v feed. Is there a 9v feed somewhere in these LED Sammy's that'll take 4 of these? They're .08a fans. If not, is there a way I can tap the 12v feed from the power board and cut it down?
    Thanks
    Tags: None
    • diif
      Badcaps Legend
      • Feb 2014
      • 6978
      • England
      #2
      Re: TV cooling fan

      I bought on of these when I was looking to do something similar

      http://www.dx.com/p/lm2596-digital-d...4#.VUoKJ13TU0M

        Comment

        • vbrad511
          Senior Member
          • Feb 2015
          • 70
          • United States
          #3
          Re: TV cooling fan

          That was perfect. I went to Ebay and bought a pair.
          Thank you...

          http://www.ebay.com/itm/2X-LM2596-DC...item416ab0ba52

            Comment

            • diif
              Badcaps Legend
              • Feb 2014
              • 6978
              • England
              #4
              Re: TV cooling fan

              You're welcome. That's a crazily cheap price !

                Comment

                • vbrad511
                  Senior Member
                  • Feb 2015
                  • 70
                  • United States
                  #5
                  Re: TV cooling fan

                  Update....Got 4 30mm fans installed, ran fine for a bit, then as things heat up in the tv the voltage goes up. All starts nice and quiet, then the fans speed up. In addition to the speed, the fans seem to not be holding up well. Got at least one making a part-time whine. I'm assuming the voltage spike is due to expansion in the step-down unit's adjuster. I ordered a different style that's all done electronically (set voltage, no adjustment), so we'll see how that one does...once I figure out what fans to use.

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