1. Identify the Part You Need
- The Charging Port Dock Board (Sub-PCB): This is the small circuit board at the very bottom of the phone. It houses the micro-USB charging port, the microphone, and the antenna connection. If your cable won’t stay in or the phone isn’t getting power, this is usually the part you need to replace.
- The Main Motherboard Long Flex Cable: This is the long ribbon cable that connects the bottom charging board directly to the main motherboard at the top of the phone. You only need this if the ribbon itself is torn or corroded.
2. Where to Buy the Replacement Part
You can easily find these budget-friendly replacement parts online:
- Local & Regional Marketplaces: You can find the sub-board or the long flex connection on platforms like smz (prices usually range from ₨ 500 to ₨ 900) or specialized local mobile repair suppliers like smz.
- International Platforms: For global shipping, global listings are available via smz.
3. Repair Tips
Replacing this part requires opening up the smartphone:
- The Process: You will need to safely heat and remove the glass back cover, unscrew the lower loudspeaker shield, disconnect the old flex board/ribbon, and drop the new one in.
- Screw Caution: Be extremely careful when putting the screws back into the lower shield. Ensure you use the exact same short screws you took out; using longer screws by mistake can pierce straight through into the back of the LCD screen, permanently ruining your display.
- Professional Help: If you do not have precision electronics tools (like a heat gun, spudgers, and small screwdrivers), it is highly recommended to take the part to a local mobile technician to avoid tearing internal cables.
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