![background image](http://html.mh-extra.com/html/samsung/sm-a505f/sm-a505f_service-manual_1191544069.webp)
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.
8. Level 3 Repair
8-4-16. Display
LCD is still off after PWR ON
Yes
No
Reconnect the HDC7004
END
Yes
Check
VDD_LCD_3P0 = 3.0V (C7048)
VDD_LCD_1P8 = 1.8V (C7049)
No
Resolder or Replace the U7005(3.0V)
Resolder or Replace the U7006(1.8V)
Yes
Check
ELVDD 4P6 = 4.6V (C7066)
ELVSS_-4P4 = - 4.4 ~ - 1.4V (C7074)
ELAVDD_7P3 = 7.6V (C7056)
No
Resolder or Replace the U7000
Yes
Check the connection of
HDC7004
Replace the Display module
Yes
Replace the Display con-to-con FPCB
Yes