Infinix Smart 9 Lcd Light Problem Solution

Описание: This video explains how to fix LCD light problems in Infinix Smart 9. If the display is working but the screen has no backlight, is dim, or flickers intermittently, follow these steps. We cover software resets, brightness settings, display connector checks, backlight IC testing, and motherboard-level repairs to restore proper screen lighting.

How to restart the phone and check display

How to increase brightness manually in settings

How to disable auto-brightness and test again

How to check for black screen by using torchlight

How to test screen in recovery or bootloader mode

How to use ##4636## to check LCD functions

How to update firmware to fix display bugs

How to reset the phone without data loss

How to enter safe mode to test brightness

How to uninstall third-party apps affecting display

How to open the phone and inspect LCD connector

How to reseat the display flex cable properly

How to clean LCD connector with IPA

How to check continuity of backlight line

How to test voltage at display connector

How to check for short circuit in backlight circuit

How to inspect and replace backlight IC

How to test and replace display filter capacitors

How to test backlight coil with multimeter

How to verify supply from PMIC to backlight section

How to identify damaged components near display

How to replace LCD completely if no backlight

How to test new screen with working board

How to reflow backlight IC if loose solder

How to trace screen light line under microscope

How to remove corrosion on LCD pads

How to test brightness sensor if it fails to auto adjust

How to inspect for physical screen damage

How to fix screen flicker due to poor contact

How to confirm final fix with LCD tester tool

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