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[solved]820-2936-B does not recognize internal screen model and resolution

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  • [solved]820-2936-B does not recognize internal screen model and resolution

    820-2936-B does not recognize the internal model of the screen
    I have it out for repair without PP15V_T29 after water damage.
    I changed the U3890 and other small parts.
    Now I have a problem with the screen resolution like on photo.

    Can you help me with this problem?
    Regards Mariusz

  • #2
    PRAM reset? Is this the original LCD or was it changed?

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    • #3
      PRAM done
      display original and checked
      If I run macos I can change resolution but original 1280x800 is missing.

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      • #4
        have you tried a different screen? that vertical bar is telling of lcd issue

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        • #5
          This could be corrupted EDID EEPROM in the LCD. First I would try another LCD assembly.

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          • #6
            I checked another display without good results
            I will change lvds port to be sure

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            • #7
              OK, problem solved
              It was LVDS port.
              I found nothing on it but with new one all works ok.
              Thanks everyone for advice.
              ​Kindly Regards Mariusz

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