FIXED A1466 820-00165-A backlight problem

isc

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I disconnect everything and replace charging board and its flat cable ,touch-pad fcc test other good working lcd assembly everything ok else no backlight when i close lid then open it backlight flashed then turns off
i replaced U7701 with new one
SMC_LID 3.3v
EDP_BKLT_PWM 2.49v
SMC_LID 3.42v
pin 3 for Q7707 is 0v now
what to test else?
 

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