Samsung A04 LCD Display Graphics Fault Screen Lines Rendering Failure Hardware Repair Guide

Описание: This guide explains Samsung A04 LCD display graphics failure including vertical lines, horizontal lines, color banding, pixel artifacts, ghosting, display distortion, screen flickering, and half-display issues. Covers display connector inspection, eMMC GPU data line checking, display IC section, PMIC display supply rail, filter components, and jumper methods for board-level mobile technicians and training students.

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Samsung A04 Display Graphics Problem Solution

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Samsung A04 Vertical Lines Display

Samsung A04 Horizontal Lines Display

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Samsung A04 Display IC Problem Solution

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Samsung A04 Display Data Ways Diagram

Samsung A04 Display Filter Components

Samsung A04 Motherboard GPU Output Fault

Samsung A04 Display Short Problem

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Samsung A04 Display Logic Driver

Samsung A04 Display Jumper Solution

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Samsung A04 LCD Replacement Test

Samsung A04 Display PMIC Section

Samsung A04 Display Ribbon Error

Samsung A04 Screen Distortion Fix

Samsung A04 Display Schematic Reference

Samsung A04 Display Path Tracing

Samsung A04 Display Full Repair Guide

🧰 30 HARDWARE REPAIR STEPS

Power off phone

Remove back cover

Disconnect battery

Remove display and sub-board

Inspect LCD flex ribbon

Test with new LCD module

Confirm graphics artifacts remain

Inspect display connector pins

Clean connector using IPA

Re-seat connector firmly

Check display filter components

Inspect LCD data resistor network

Trace GPU data lines to LCD connector

Check data line continuity

Inspect for broken track

Check short on display data rail

Reflow connector if dry joints appear

Inspect display PMIC section

Check display supply voltage rails

Replace burnt filter or resistor

Inspect EMI filter arrays

Reheat display driver related ICs

Test board under microscope

Reassemble temporarily

Connect battery and test display

Check for stable rendering

Confirm no flickering or artifacts

Final reassembly

Perform result QC test

Return to customer

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