Vivo Y21 Display Graphics Problem Solution | Screen Colors, Lines, Distortion, Jumper & Ways

In this video, we fix Vivo Y21 display graphics problem such as white display, color distortion, vertical/horizontal lines, flickering screen, rainbow colors, and broken LCD data line. This guide includes display connector track ways, data line jumper, PMIC display voltage check, and display IC rework. Follow each step carefully for a tested successful result.

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Vivo Y21 Professional Display Repair Guide

30 STEP-BY-STEP REPAIR GUIDE

Power off phone.

Remove SIM tray.

Open back cover.

Disconnect battery.

Remove and test with new LCD.

If graphics still abnormal → motherboard issue.

Clean display connector with PCB cleaner.

Inspect connector pins under magnifier.

Reheat display connector gently.

Check LCD data line continuity.

Check VCC and ground points.

Check display voltage output.

If missing → check PMIC output.

Trace broken tracks and jumper.

Check EMI filters near display section.

Replace damaged filters.

Reflow Display IC.

If still same → replace Display IC.

Test board with new LCD again.

Clean board thoroughly.

Reconnect all flex cables.

Assemble phone.

Power ON and observe graphics.

Increase brightness and test colors.

Check for line flicker.

Confirm stable output.

Perform reboot test.

Run display test mode if available.

Final graphics quality check.

Job Complete ✅

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