Samsung Alpha SM-G850F Led Lights Problem Solution
Normally you don’t see Samsung Galaxy Alpha SM-G850F led lights problems. In these smartphones led lights are placed inside the LCD so unless the LCD is damaged itself you won’t see a problem like this. So if your phone’s LCD is working fine but the led lights are not make sure the brightness in the phone is not set too low.
First check led lights and their power comes from the LCD’s flex cable. So if your phone’s LCD led lights have stopped working I have marked all of their jumper ways in this diagram. Make the jumper from LCD connector to it’s corresponding point and hopefully your problem will be solved.
Samsung SM-G850F Display Light Problem Hardware Solution:
Unplug, clean and re-plug display strip (along with connector).
If the above step fails then check with any other good working LCD screen.
Replace on-board connector and check.
Credit To d-artigo
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check the Display track using Multimeter.
track working then rehot or replace that U900 ic.
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Note: Please note that even though every solution posted on our website is tested by one or more members of our team before posting, but still we do not take any responsibility for any damage it may cause to your cell phones. Use these repairing solutions at your own risk. Thank You.