Origineel bericht door: Narek ,
I've solved screen mysterious behavior - it turned out that FL2050 was loose and there was no connection with C2095. Probably I moved it while removing U2301. After resoldering FL2050 original screen works again. But I still didn't solve front camera problem. As you suggested, I've checked FL1166 - it's OK. I measured all beads again, they seem to be OK, they show 0ohm while phone is on. I put new U2301 and still front camera stays black. I've measured voltage on C2301 and it was ~3,5v on battery and ~3,9v on charger. It's too low, and I think it may cause the problem.