brother here the 6300 display solution step by step check ways
1)change display
2)resoldring display coonector
3)check vio 1.8 volt
a)check or change coil
b)remov blue marked this capacitor
c)make this jumber like this picture
4)check vaux 2.8v volt
a)check or change coil
b)remove red maked capacitor
c)make this jumber like this picture
5)Chnage display EMI filter(2Nos)
6)LAST CHECK RAP3G REFLOW REBALL
Regards
1)change display
2)resoldring display coonector
3)check vio 1.8 volt
a)check or change coil
b)remov blue marked this capacitor
c)make this jumber like this picture
4)check vaux 2.8v volt
a)check or change coil
b)remove red maked capacitor
c)make this jumber like this picture
5)Chnage display EMI filter(2Nos)
6)LAST CHECK RAP3G REFLOW REBALL
Regards