Скачать или смотреть Xiaomi POCO X3 LCD Display Light Problem Solution | Backlight Not Working Fix Step by Step

In this video, you will learn complete professional hardware solution for Xiaomi POCO X3 LCD display backlight problem including dim screen, no backlight, and uneven brightness. This step by step repair guide covers LCD flex testing, backlight LED inspection, LED driver IC (PMIC) checking, voltage measurement, jumper solutions, and common causes of backlight failure. Ideal for mobile repair technicians in US, UK, Europe, and worldwide. No voice and no thumbnail required.

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🛠️ 30 Step-by-Step Repair Guide

Power off Xiaomi POCO X3

Remove SIM tray

Open back cover carefully

Disconnect battery connector

Remove LCD assembly

Inspect LCD flex connector

Clean flex connector pins with IPA

Test continuity of LCD flex lines

Check backlight LED supply voltage

Measure LED driver IC output voltage

Inspect LED driver IC (PMIC) pins

Check fuse near backlight line

Test individual backlight LEDs

Inspect resistor and capacitor on LED line

Repair broken backlight jumper line

Replace damaged backlight LED if required

Re-solder loose LED driver IC pins

Measure VCC and enable voltage for LEDs

Check ground path of backlight

Inspect for water damage or corrosion

Test voltage after each repair step

Reconnect LCD flex connector

Reconnect battery connector

Power on device

Test screen brightness

Adjust brightness settings

Confirm stable backlight

Ensure no flickering

Test full color display

Reassemble phone completely

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