Sceptre x322bv-hdr

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  • raykia
    Member
    • Feb 2014
    • 12
    • USA
    #1

    Sceptre x322bv-hdr

    Sceptre x322bv-HDR as no backlight. Tested with a light shined on screen and can see the volume bar change

    I searched high and low for schematics or service manual with no luck

    Found the output to the led backlight.

    21.34 v is measured out from connector cnb803 to the backlight can someone confirm this the correct reading?

    Measures open on plug to the led backlight.

    I haven't pulled the back to inspect led circuit.

    Before pulling to inspect is it worth it to try to repair the backlight or replace?

    Thanks
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: Sceptre x322bv-hdr

      Lets start by uploading the pictures of the whole back side of the TV so we can see how all the boards are connected together, then the close up pictures top and bottom side of the board around the LED connector.
      21.34 VDC is too low, I expect higher than that.
      Never stop learning
      Basic LCD TV and Monitor troubleshooting guides.
      http://www.badcaps.net/forum/showthr...956#post305956

      Voltage Regulator (LDO) testing:
      http://www.badcaps.net/forum/showthr...999#post300999

      Inverter testing using old CFL:
      http://www.badcaps.net/forum/showthr...er+testing+cfl

      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
      http://s807.photobucket.com/user/budm/library/

      TV Factory reset codes listing:
      http://www.badcaps.net/forum/showthread.php?t=24809

        Comment

        • raykia
          Member
          • Feb 2014
          • 12
          • USA
          #3
          Re: Sceptre x322bv-hdr

          Waiting for a reset for the back of board

          However most likely will not work due to just notice a diode that may be bad

          See the pics

          update: added the back of board plus diode near connector in question reading without pulling from board I should have a reading in the kilo ohms

          8.53 M ohms with diode set reading of .262 V i'll need to at least replace that.

          either way I suspected at least 40 to 60 V for an output to the LED's

          it would be nice to have the schematic and or SM for this
          Attached Files
          Last edited by raykia; 12-19-2015, 11:43 AM.

            Comment

            • raykia
              Member
              • Feb 2014
              • 12
              • USA
              #4
              Re: Sceptre x322bv-hdr

              really not much to this unit in way of components

                Comment

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