Itel A50 Charging Problem Solution | USB Port | Sub Board Strip | PMIC Repair | Step by Step Guide

Описание: In this video, we provide a complete Itel A50 charging problem solution, covering issues such as:

No charging

Slow charging

USB port loose or damaged

Charging not detected

Sub-board strip failure

PMIC voltage output problems

This board-level repair guide includes USB port inspection, sub-board strip testing, filter/diode check, PMIC voltage tracing, jumper solutions, and connector repair. Perfect for mobile repair technicians looking for step-by-step visual instructions.

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🔧 30 Step-by-Step Repair Instructions

Power off Itel A50

Remove SIM tray

Heat and remove back cover

Disconnect battery connector

Unscrew mid-frame screws

Inspect USB port for physical damage

Clean port using isopropyl alcohol

Test charger and cable output

Inspect sub-board strip for continuity

Replace damaged strip if broken

Inspect motherboard charging lines

Measure 5V input at USB port

Trace VBUS to PMIC

Inspect fuses and filter capacitors

Test diodes on charging path

Replace faulty filters or diodes

Check USB D+ / D– data lines

Check PMIC charging enable signals

Test battery connector positive/negative lines

Test sub-board output voltage

Jumper charging lines if necessary

Reflow Type-C connector if loose

Reflow PMIC if voltage unstable

Replace PMIC if dead

Reconnect battery and test charging

Test fast charging detection

Verify stable voltage under load

Reassemble mid-frame

Fully assemble phone

Final QC charging test

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