If your Itel a90 LCD backlight problem, you are not alone. This is one of the most common hardware issues reported by Itel users. In this repair guide, we will show you exactly how to fix the itel a90 lcd backlight problem using a step-by-step method that has been tested and verified. Watch the full video tutorial below and follow the written steps carefully.
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Is your itel a90 screen dark or showing a black screen despite being turned on? In this professional mobile repairing tutorial, we show you the complete itel a90 LCD light solution and display backlight jumper ways.
This step-by-step guide covers the itel a90 light IC replacement, coil testing, and diode values to ensure a 100% successful repair. Whether you are a technician in the USA, UK, or Canada, these hardware repair techniques are essential for troubleshooting itel smartphone display issues.
Key Topics Covered:
itel a90 display light section diagram
itel a90 LCD backlight jumper solution
How to test itel a90 light boost coil and diode
itel a90 black screen fix without folder replacement
Professional mobile phone motherboard repairing tips
Smart phone hardware repair, itel mobile repairing course, itel a90 schematic diagram, LCD light IC bypass, mobile PCB tracing, display light ways, cell phone repair business.
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How to Fix Itel a90 LCD backlight problem — Step-by-Step Guide
- Power off the phone and open the back cover carefully.
- Disconnect the battery to avoid short circuits.
- Locate the display flex cable and re-seat it on the motherboard connector.
- Inspect the backlight filter/coil on the board under magnification.
- Check the backlight diode and replace if burned out.
- Test the backlight LED strip using a multimeter in diode mode.
- If the backlight IC is faulty, reball or replace it with proper BGA soldering equipment.
- Reassemble and test before closing the device.
Tools You May Need
- Screwdriver set (Phillips & Pentalobe)
- Plastic pry tool / spudger
- Tweezers
- Multimeter (for advanced diagnosis)
- Soldering iron (if board-level repair is needed)
Important Tips Before You Start
- Always power off the device before opening it.
- Take photos before disconnecting any cables so you remember where each connector goes.
- Work on a clean, well-lit surface to avoid losing small screws.
- If the phone is under warranty, contact Itel service centre first.
Final Words
We hope this guide helped you solve the itel a90 lcd backlight problem problem. If the issue persists after following all the steps, the problem may require a board-level repair or component replacement. Visit a professional mobile repair technician in that case. For more repair guides like this, browse our full repair library or subscribe to our YouTube channel for daily video tutorials.
