mac book air 820-3437 flashing blinking back light

djpat1974

Member
Hi, I have and mac book air 820-3437 with blinking, flashing display I measure Q7707 where I found pin 5 voltage going in and out from 3.3 to.09 soi change the backlight driver and all its resistor around it am still getting flashing backlight I check R7789 and R7788 and the resistance is good I replace the LCD display with another good working one still the same problem even change the LCD cable still problem remains I measure led return for 0 ohms and there good please help thanks.
 

dukefawks

Administrator
If EDP_BKLT_EN is fluctuating the why mess with all the things you did? Replacing Q7707 would be the first thing in this case.
 
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