X322BV-HD E1-53200011-ER power supply no backlight

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  • sheen818
    Member
    • Sep 2011
    • 34
    #1

    X322BV-HD E1-53200011-ER power supply no backlight

    When TV power on, backlight only flash once, then gone. The main unit is good because I can see the picture with flashlight. the backlight pins is at left top corner on the first picture, third picture is detail. TV power on, The backlight pin, only VCC pin is 5V, others is 0. some pins maybe is 0.001. I think 0. There are four pins at right top corner, but only left two pins connect main unit, other two pin is empt. second picture is detail. BK_ON pin is 5V, ADJ pin is 3V when cable connect main unit. If remove cable, both pins are 0. The two pin's power come from main unit, and let backlight on. I understand: The problem is main unit give power supply signal(5V and 3V) to let power supply give power to inverter board, but power supply board is no reaction: only one pin has 5v, others is 0. Someone has idea to help me? Thanks.
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    Last edited by sheen818; 11-15-2013, 02:44 PM.
    Tags: None
    • munirutech
      Senior Member
      • Oct 2013
      • 72
      • Ghana
      #2
      Re: X322BV-HD E1-53200011-ER power supply no backlight

      did you see any cable from the power supply to the invertert?if yes how many voltage did you get there,some boards are label or printed on there

        Comment

        • sheen818
          Member
          • Sep 2011
          • 34
          #3
          Re: X322BV-HD E1-53200011-ER power supply no backlight

          the power supply connect inverter, I post the pin details in third picture. When TV power on, only vcc pin(fifth from top) has 5v, others is 0.

            Comment

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