Скачать или смотреть Samsung A25 Charging Sub Board Diagram | USB Port Pinout & Jumper Ways Fix

In this video, you will learn a complete step‑by‑step hardware repair guide for Samsung A25 charging sub board diagram and problem solution. This video covers charging not working, USB not detected, slow charging, loose USB port, sub board damage, and broken charging lines. Full explanation of charging sub board pinout, VBUS, D+ D‑, CC lines, ground, and sub board to main board connector ways is shown clearly. Voltage testing points, diode mode readings, jumper ways solutions, USB Type‑C pinout, and hardware level repair methods are explained in detail. This guide is very useful for mobile technicians and beginners. Watch the complete video for accurate Samsung A25 charging sub board hardware repair solution.

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🛠️ 30 STEP BY STEP HARDWARE REPAIR GUIDE

Power off Samsung A25

Remove SIM tray

Open back cover carefully

Disconnect battery connector

Remove sub board shield

Locate charging sub board

Inspect USB Type‑C port

Clean USB connector pins

Check VBUS line continuity

Test D+ D‑ data lines

Check CC line continuity

Inspect ground pads

Measure diode mode values

Inspect charging filters

Check short to ground

Reflow USB port pins

Apply jumper to missing VBUS

Apply jumper to data lines

Repair lifted PCB pads

Replace broken USB port

Reinstall sub board shield

Reconnect battery

Power on device

Test charging symbol

Test charging current

Verify data connection to PC

Test OTG support

Verify stable charging

Clean repaired area

Final charging sub board test

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