Insignia NS-LCD42 Washed out image

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  • drpj23
    Badcaps Veteran
    • May 2012
    • 528
    • USA

    #1

    Insignia NS-LCD42 Washed out image

    Originally upon opening up there was some bulged caps on the p/s which I replaced but found the 24v rail on the P/S was only 20V so I replaced the power supply and to my dismay the screen and that voltage was the same.

    The backlight works very well and screen settings are good.

    And here are some regulator/transistor info (as my face melts by the megmeet power supply lol)

    MAIN

    U11
    A1 AS1084R A0724
    1: 2.09
    2: 3.34
    3: 4.97

    U6
    A1 AS1084S3 A0722
    1: 1.26
    2: 2.5
    3: 4.96

    U2
    A1 AS1117L 80704 20
    1: 2.04
    2: 3.28
    3: 5.04

    U3
    SAME AS U2

    U1
    UTC 78T05AL UBA1
    1: 11.95
    2: 0
    3: 4.97

    U7
    SAME AS U11

    T-CON

    U304
    I502 950T65
    1: 3.3
    2: 0
    3: 2.5

    I will upload pics a little later

    If anyone has any advice or help, that would be awesome.
  • drpj23
    Badcaps Veteran
    • May 2012
    • 528
    • USA

    #2
    Re: Insignia NS-LCD42 Washed out image

    Ok update:
    After I wrote that post, it would not turn off so I unplugged it.
    Now when I plug it in the backlight flashes on then shuts off and I cannot get the tv to turn on and there is no standby light. I do have 5v stby though.

    Is my main board crapping out?

    Comment

    • drpj23
      Badcaps Veteran
      • May 2012
      • 528
      • USA

      #3
      Re: Insignia NS-LCD42 Washed out image

      Here are some pics.

      That solder jump on the back of the main board looks pretty sketchy lol
      Attached Files

      Comment

      • budm
        Badcaps Legend
        • Feb 2010
        • 40746
        • USA

        #4
        Re: Insignia NS-LCD42 Washed out image

        Hey, look just like my TV! I replaced bad caps on the power supply, then found out later i also has bad main board, all the voltages check OK on my regulators also. I got a replacement board from Jimmy, put the new board in, it turns out it was for Polaroid with exact same model number as Insignia (same company must be making TV for Polaroid and Insignia), the bootup screen shows Polaroid so I had to get Polaroid remote to work with new board. Picture quality is so so.
        http://s807.photobucket.com/albums/y...%20NS-LCD42HD/
        Never figure out what is wrong with the board.
        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

        • drpj23
          Badcaps Veteran
          • May 2012
          • 528
          • USA

          #5
          Re: Insignia NS-LCD42 Washed out image

          Ok, then I'll order one and that's pretty funny lol. Does your power supply though do 20v or close to 24v .... that slightly bothers me.

          Comment

          • budm
            Badcaps Legend
            • Feb 2010
            • 40746
            • USA

            #6
            Re: Insignia NS-LCD42 Washed out image

            I don't remember.
            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

            • drpj23
              Badcaps Veteran
              • May 2012
              • 528
              • USA

              #7
              Re: Insignia NS-LCD42 Washed out image

              Ah darn :P....well we'll see how it goes
              It'll be my luck with the T-CON but the main is sounding very good right now so thanks for the help

              Comment

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