Iphone 7 Plus No Picture and Backlight

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  • platinumsteel
    Badcaps Veteran
    • May 2019
    • 234
    • Trinidad&Tobago
    #1

    Iphone 7 Plus No Picture and Backlight

    Hi guys i have a Iphone 7 Plus that gives me no backlight and picture at all.I am 100% sure the phone is booting. It's drawing the correct booting current on my amp meter.I have tried known working screens. I have all my proper diode mode values on all the pins. No shorts. I connected the screen and measured the Display Chestnut PMU IC and below i have put the values i got. Would you be kind enough to check those values and tell me if anything doesn't look right ? I am considering changing the Display Chestnut PMU IC. But wanted to be certain that may be the issue before I do so thanks.
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    • mon2
      Badcaps Legend
      • Dec 2019
      • 14000
      • Canada
      #2
      Re: Iphone 7 Plus No Picture and Backlight

      Review this video:

      https://www.youtube.com/watch?v=Gry1IJSQL9c

      Warning: We may need a haircut like Ben's to fix it...

        Comment

        • BudabestTech
          New Member
          • Apr 2022
          • 2
          • Philippines
          #3
          Re: Iphone 7 Plus No Picture and Backlight

          You may check the resistance value in display fpc connector

            Comment

            • platinumsteel
              Badcaps Veteran
              • May 2019
              • 234
              • Trinidad&Tobago
              #4
              Re: Iphone 7 Plus No Picture and Backlight

              Originally posted by BudabestTech
              You may check the resistance value in display fpc connector
              Hi yes i did triple check all resistance values on the FPC connector just like they are on zxw . And i made sure all is fine there.I will try to change the IC tonight and report back if anything changed.
              Last edited by platinumsteel; 04-23-2022, 10:08 AM. Reason: forgot to add

                Comment

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