Samsung SGH-E740S Service Manual page 54

Flow Chart of Troubleshooting
9-9. Back Light (for Color Main LCD)
Backlight does not work
Yes
No
Is LCD Contrast set on high
Set LCD Contrast on high level
level in the Menu?
Yes
No
Check the HCD500
Resolder HCD500 or change PBA
pin 58 = H
Yes
No
Check the SLC100
Resolder SLC100 or change SUB PBA
pin 58 = H
Yes
Change the LCD Module
Yes
END
9-18
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