Insignia NS-37D20SNA14 Backlight going out. Flickering! Help!

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • ajshoe
    ajshoe
    • Dec 2012
    • 477
    • usa

    #41
    Re: Insignia NS-37D20SNA14 Backlight going out. Flickering! Help!

    turned set on without screen. works now after replacing 3 bulging caps. see how long it lasts !

    Comment

    • OgreX
      New Member
      • Mar 2014
      • 7
      • usa

      #42
      Re: Insignia NS-37D20SNA14 Backlight going out. Flickering! Help!

      Originally posted by cutlassbenbr
      Here is what I found with this TV. LED's have bad connections.
      Awesome job dude!
      just wish I would have checked back sooner, oh well.
      (wasn't taking any chances with the solder job, lawl...)
      Attached Files

      Comment

      • rockjock83
        New Member
        • Jul 2013
        • 2
        • United States

        #43
        Re: Insignia NS-37D20SNA14 Backlight going out. Flickering! Help!

        Have same model on the bench and found 2 shorted LED's in the backlight LED strips. I believe the part # is: SVP370A33. I am starting to see this kind of problem more and more. Had a Sony and a Samsung with same issue. If anyone is familiar with a supplier for replacement LED's for these strips or for replacement LED strips, I would appreciate the info.

        Comment

        • edgarlz123
          New Member
          • Aug 2016
          • 1
          • Mexico

          #44
          Re: Insignia NS-37D20SNA14 Backlight going out. Flickering! Help!

          Originally posted by cutlassbenbr
          Here is what I found with this TV. LED's have bad connections.
          Than you! I had exactly the same problem. Now working perfectly!

          Comment

          • InsigniaTVBroke
            New Member
            • Oct 2016
            • 1
            • USA

            #45
            Re: Insignia NS-37D20SNA14 Backlight going out. Flickering! Help!

            Originally posted by cutlassbenbr
            Here is what I found with this TV. LED's have bad connections.
            THANK YOU. I REALLY didn't want to have to tear the screen out to inspect the LEDs and wiring until I saw your post. I had this problem too. I quickly found the point of discontinuity and bridged it. Double checked all of the LEDs according to this video and then bridged the remaining (working) connections for good measure. All fixed, and at no expense to me! Thanks!

            Comment

            • instarep
              Member
              • Jul 2014
              • 28
              • Canada

              #46
              Re: Insignia NS-37D20SNA14 Backlight going out. Flickering! Help!

              Just checked, I have 2 like this on shelves in my garage. Just a few tap on the back et voilĂ . Thanks that wasn't an easy one... Happy that I will save them both!

              Comment

              Related Topics

              Collapse

              • k24a1
                TongFang GK5CN5Z (CyberPowerPC Tracer III Xtreme) LCD backlight flickering
                by k24a1
                Hello, I have a strange issue with a laptop that I'm working on fixing up for a friend of mine, and it appears as though the LCD backlight control is not reliable. The LCD backlight flickers sometimes with inconsistent brightness. The controls are no better.. when I go 1/3 of the way in the brightness controls it will get bright but flicker quite obviously, and when I go all the way to what SHOULD be full brightness, it becomes darker. The flickering is less severe at lower brightness, but more severe at higher. the backlight will literally flicker on and off when I set it to the lowest brightness...
                06-11-2024, 05:45 PM
              • sliceypete
                Samsung LE52B620 - Flickering backlight
                by sliceypete
                Hello All,

                My Samsung LE52B620 started to have backlight flickering about a year ago, it would only last for about 10 mins and then the backlight would stay on.

                about a month ago the backlight flickering is constant and does not stop.

                I think it's a problem with the power supply board (BN44-00267b) or maybe the backlight is dying?

                I checked and all the caps look to be fine.

                I do not believe it is a problem with the mainboard, since I unplugged it from the power supply and the backlight came out but still flickers.
                ...
                08-04-2021, 05:11 AM
              • triplefour
                UN65TU700DF picture and sound but no backlight. BL tests ok but repl. PSU didnt fix!
                by triplefour
                this tv is throwing me for a loop. do samsung tvs no longer have the backlight self test feature built into the power supply?
                i tested the backlight with my LED tester and it lights up both strips. one of them reads 100v and the other reads 63.7v.
                unplugged mainboard from power supply but left backlight plugged in, and then plugged psu wall power in. expected to see backlights light up but see nothing.
                according to how ive diagnosed in the past, this would almost always be a bad power supply. replacement power supply was cheap like 20$ from ebay. but still i get not even...
                09-13-2023, 10:43 PM
              • EffiSon
                Lenovo Y50-70 - LA-B111P Rev:1A Flickering laptop screen after shorten the R205 resistor/ backlight restoration ?
                by EffiSon
                Hi. Could anyone on the forum help me find the cause of the problem?
                The board is LA-B111P Rev:1A comes from Lenovo Y50-70.

                I have a identified the damaged R205 resistor, and connect a jump wire over it So it restores the backlight but causing strange problems

                1. With Battery ONLY plugged in laptop works fine
                2 .With Charger ONLY plugged in laptop works fine as well

                3. Connecting both battery and charger at the same time shows a strange flickering screen. The flickering is not constant, it is completely random (and I think it depends on the load
                ...
                01-29-2024, 04:03 PM
              • RetroComputingGrotto
                LG 42LN540V LED Backlight Flickering After Replacement When Connecting The Screen
                by RetroComputingGrotto
                This TV has been on the wall in our reception area for around 10 years and the other day the backlight failed. You could see a feint picture so we knew the screen was OK. I took the TV apart to get to the failed backlight and inject voltage in to each half of the LED strips to identify which ones had failed and 4 needed replacing. I ordered a set off of Amazon and they arrived the next day.

                On fitting the new LED strips I plugged in the TV was blinded by the light!!




                It was only when I partially put it all back together (including the screen) that...
                10-23-2024, 04:17 AM
              • Loading...
              • No more items.
              Working...