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Origineel bericht door: markparnell1972 ,


Hi ,  the phone originally had no or very glitchy touch and had no 5 volts on pin 11 of J4502   , the components on that line seemed ok so I replaced U3703 it  still didn’t fix the touch ,  still no 5 volts on pin 11 .

After that I had the half back light issue , you were spot on with the diagnosis for that ,after scraping the underfill away FL3903 and FL3901 were indeed shorted , the  backlight is good again now ..

I’m not sure how replacing U3703 caused that short as I didn’t heat that part of the board and they are heavily underfilled .