Huawei P40 Lite 5G LCD Light Problem Solution | No Backlight Dark Screen | Hardware Jumper Ways Fix

In this video, you will learn a complete step by step hardware repair guide for Huawei P40 Lite 5G LCD display light problem solution. This video covers no backlight, dark screen, display visible with torch light, backlight voltage missing, LCD light IC fault, coil and diode issues. Full LCD light section testing points, backlight circuit checking, voltage measurement, diode mode readings, and hardware jumper ways fix are explained clearly. This guide is very useful for mobile technicians and beginners searching for accurate Huawei P40 Lite 5G LCD light hardware repair solution.

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🛠️ 30 STEP BY STEP HARDWARE REPAIR GUIDE

Power off Huawei P40 Lite 5G

Remove SIM tray

Open back cover carefully

Disconnect battery connector

Remove motherboard shield

Inspect LCD connector area

Check backlight pins

Clean LCD connector pins

Test LCD with torch light

Measure backlight voltage

Check backlight coil continuity

Test diode mode on backlight line

Inspect backlight capacitors

Check short to ground

Trace backlight enable signal

Reflow LCD connector carefully

Replace faulty backlight coil

Apply jumper on backlight line

Replace short capacitor

Reconnect LCD flex cable

Connect battery temporarily

Power on phone

Check screen brightness

Adjust brightness settings

Observe light stability

Clean repaired area

Reinstall motherboard shield

Secure battery connector

Close back cover properly

Final LCD light test

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