iPhone Black Screen Repair

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Video Introduction
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<p>&nbsp;iPhone&nbsp;7&nbsp;starts&nbsp;up&nbsp;with&nbsp;black&nbsp;screen&nbsp;or&nbsp;no&nbsp;display&nbsp;but&nbsp;still&nbsp;working,&nbsp;and&nbsp;the&nbsp;boot&nbsp;current&nbsp;is&nbsp;normal. It&nbsp;still&nbsp;exists&nbsp;after&nbsp;replacing&nbsp;the&nbsp;screen.&nbsp;</p><p>REWA&nbsp;LAB&nbsp;tested&nbsp;and&nbsp;found&nbsp;that&nbsp;this&nbsp;malfunction&nbsp;is&nbsp;caused by&nbsp;broken&nbsp;backlight&nbsp;circuit&nbsp;on&nbsp;logic&nbsp;board.&nbsp;Please&nbsp;check&nbsp;the&nbsp;video&nbsp;for details.&nbsp;</p><p><br/></p>