PHONE WHITE SCREEN BUT PHONE WORKING FINE(CALLING 100%OK) SOLUTION STEP BY STEP

1)CHANGE DISPLAY

2)RESOLDRING OR CHANGE DISPLAY CONNECTOR

3)CHECK VI0(1.8V) OR VAUX(2.5V)
A)VIO 1.8VOLTAGE NOT SHOW MULTI METTER?
1)CHECK C4400 TO C2215 WAYS LIKE THIS PICTURE(WAYS ARE OK?)
2)CHECK OR CHNAGE L4400 COIL OR REMOVE C4400,C2215 CAPACITOR

3)AGIAN SAME VOLTAGE MISSING 100%RETU PROBLEM(VIO 1.8V GENARATED BY RETU)
REFLOW OR CHNAGE RETU

B)VAUX(2.5V) VOLTAGE NOT SHOW MULTI METTER?
1)CHECK C2216 TO C4401 WAYS LIKE THIS PICTURE(WAYS ARE OK?)
2)CHECK OR CHANGE L4401COIL OR REMOVE C4401,C2216 CAPACITOR

3)AGIAN SAME VOLTAGE MISSING 100%RETU PROBLEM(VAUX 2.5V GENARATED BY RETU)
REFLOW OR CHNAGE RETU

VIO(1.8V)OR VAUX(2.5) prefect?
A) REFLOW OR CHNAGE Z4402 OR Z4403

B) SAME WHITE SCREEN PROBLEM AGAIN REMOVE 2 DISPLAY IC THEN CHECK DISPLAY CONNECTOR TO DISPLAY EMI WAYS

C)NOT SOLVED THIS PROBLEM 100%OMAP PROBLEM