Display; Lcd Is Still Off After Pwr On - Samsung SM-A505F Service Manual

8. Level 3 Repair

8-4-16. Display

LCD is still off after PWR ON

Replace the Display con-to-con FPCB
Check the connection of
VDD_LCD_3P0 = 3.0V (C7048)
VDD_LCD_1P8 = 1.8V (C7049)
ELVDD 4P6 = 4.6V (C7066)
ELVSS_-4P4 = - 4.4 ~ - 1.4V (C7074)
ELAVDD_7P3 = 7.6V (C7056)
Replace the Display module
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung's written authorization is strictly prohibited.
Yes
Yes
HDC7004
Yes
Check
Yes
Check
Yes
Yes
END
No
Reconnect the HDC7004
No
Resolder or Replace the U7005(3.0V)
Resolder or Replace the U7006(1.8V)
No
Resolder or Replace the U7000