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820-4924-09 no display water damage

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  • 820-4924-09 no display water damage

    Hi. I have board after water damage where i replaced damaged components but i dont have any picture on screen nothing even i put light behind or on central point of screen. Sound coming out from speakers.

  • #2
    Where was the spill?
    Post some voltages of LCD connector...

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    • #3
      Yeah voltage present at the inductor powering the screen? Tried known good 2015 LCD?

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      • #4
        j8300 connector:
        pin: 28,29,30 - 5.15v
        pin: 1 - 0.003v

        liquid was on lcd connector with i replaced two of then just in case
        Last edited by lukazmac; 11-04-2018, 12:51 PM.

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        • #5
          So you at least should have image with a known good screen. Resistance to ground on backlight output (pin 1) with and without a screen attached?

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          • #6
            Post U8330/40 voltages.
            Also read this thread...
            https://www.rossmanngroup.com/boards...o-or-backlight

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            • lukazmac
              lukazmac commented
              Editing a comment
              U8330:
              pin1: 3.3v
              pin2: 0.01v
              pin3: 3.3v
              pin5: 0.01v
              pin6: 3.3v
              pin7: 3.3v
              pin8: 3.3v

              also FL8300-3 coils (good)

              D7710 pin1: 0.00v pin2: 0.00v
              Last edited by lukazmac; 11-04-2018, 04:35 PM.

          • #7
            Did you check all the things mentioned in the above link?

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