display problem solution

part 1
1 incoming call okay but no display

2 white display blue display or extra extra

3 display connector

4 display connector voltage track

 display problem solution

1 incoming call okay power IC voltage okay CPU okay

2 display or display connector clean and resold
3 display check or change
4 check display demand voltage or bypass
5 clean tips and cool testing with display output tips

open conditions
short conditions
okay conditions

open conditions solution

1 carrier plus protector IC punch
2 check carrier plus protector IC then disconnect
3 check tips check track then working IC HRC

short conditions solution

check with cool testing
1 carrier plus protector IC punch
2 carrier plus protector IC disconnect
3 check tips check track
4 working IC HRC

okay conditions solution

1 LCD change
2 check with software
3 carrier plus protector IC punch or change
4 LCD connector resold
5 CPU to display carrier short or change
6 check solution with Google search
7 CPU HRC