Nokia 3310 SD Card Not Working Solution | SD Card Slot Repair, Full Hardware Guide

Описание: Learn how to fix Nokia 3310 SD Card Not Working Problem step by step. This video shows how to check the SD card slot, clean contacts, test the SD card lines, repair broken tracks, replace damaged components, and restore full SD card functionality. Perfect for mobile technicians and beginners who want a complete hardware solution for SD card issues.

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✅ 30 STEP-BY-STEP REPAIR GUIDE

Power off Nokia 3310.

Remove back cover and battery.

Remove SIM card if inserted.

Open housing carefully.

Locate SD card slot on PCB.

Inspect SD slot for dust or corrosion.

Clean slot pins with IPA and soft brush.

Check SD card for physical damage.

Test with a working SD card.

Check continuity of SD card lines with multimeter.

Inspect solder joints of SD card slot.

Re-solder any loose pins.

Test VCC and GND lines for proper voltage.

Trace SD card data lines to IC section.

Inspect for broken tracks.

Repair broken track using jumper wire.

Check resistors or filters in SD card lines.

Replace burnt/open resistors if any.

Reflow nearby ICs if lines not responding.

Reassemble SD slot on PCB if removed.

Insert battery and SD card.

Power on and check detection.

Test read/write speed with memory card.

Verify SD card shows full capacity.

Clean housing and SD slot area.

Reassemble phone carefully.

Test multiple SD cards to confirm fix.

Inspect phone for any loose components.

Ensure SD card is stable in slot.

Final check for SD card functionality and stability.

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