Скачать или смотреть Huawei Y7 2019 Charging Problem Solution

In this video, you will learn how to fix the charging problem in Huawei Y7 2019. If your phone charges slowly, doesn’t charge at all, or shows no charging symbol, this step-by-step guide will help you troubleshoot and fix it. We will inspect the USB port, charging sub-board, charging IC, battery connector, and key voltage lines. Follow all 30 repair steps to restore proper charging function.

🔧 Step-by-Step Instructions:
Power off the device and remove the SIM tray.

Heat and carefully remove the back panel.

Disconnect the battery connector to avoid shorting.

Remove screws and lift the charging sub-board cover.

Inspect the USB port for corrosion or damage.

Clean the charging port using IPA and a soft brush.

Use a USB tester to check charging current flow.

Replace the USB cable and adapter for testing.

Test with a working sub-board if available.

Use multimeter to check VBUS line on USB port.

Check voltage between VBUS and GND (should be ~5V).

Inspect and replace the charging protection diode if damaged.

Test continuity from USB port to charging IC.

Identify and test the charging IC on the sub-board.

Replace charging IC if no voltage is coming out.

Check battery connector and flex cable for damage.

Test voltage at battery terminals (should increase when charging).

Replace battery if it fails to hold charge or accept current.

Trace VBUS line to PMIC using schematic or board view.

Measure PMIC output voltage to battery connector.

Replace or reball PMIC if VBUS line is dead.

Test and replace damaged passive components (resistors, capacitors).

Use schematic to trace and repair open charging lines.

Jumper broken VBUS line with enamel wire if necessary.

Perform software reset or update firmware to rule out bugs.

Flash stock ROM if device won’t charge even with hardware okay.

Connect charger with battery unplugged to see if phone boots.

Finalize all checks and reassemble the device.

Power on and verify charging icon is stable.

Test device for normal and fast charging functionality.

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