TCL 30800-000799 Main Board for 85S450G / 75Q570G / 75S450G / 75S470G / 85Q650G

TCL 30800-000799 Main Board

Replace a faulty or dead main board in your TCL TV with this compatible 30800-000799 board. This board is used in multiple TCL models and is a critical component for video, audio, and input control.

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Part & Board Numbers

• Part Number: 30800-000799
• Manufacturer Part Number (MPN): TCL 30800-000799
• Location: 00o5
  
• Board / Printed Numbers (may be found on stickers or silkscreen):
  • 30800-000799
  • 30801-000773
  • 40-R51MG8-MAC2HG
  • 11602-500721

Always match the part number from your original board to ensure compatibility. Model number alone is not enough, as the same model may use multiple board versions.

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Compatible TV Models

This TCL main board is known to be used in the following models:

• TCL 75Q570G
• TCL 75S450G
• TCL 75S470G
• TCL 85Q650G
• TCL 85S450G

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Typical Symptoms of a Bad Main Board

If your TV uses one of the models above and has this board number, this main board may be the cause of issues such as:

• TV powers on but has no picture or no backlight (screen stays dark)
• No signal to HDMI or other inputs despite correct source selection
• Random rebooting, freezing, or locking up on logo
• No sound, distorted sound, or intermittent audio
• Unresponsive remote or front buttons (when power supply and IR sensor are good)

These are common symptoms only and not a guaranteed diagnosis. We always recommend proper troubleshooting or consultation with a TV technician before ordering parts.

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Important Installation Notes

• Unplug the TV from power and let it sit for several minutes before beginning any repair.
• Use proper ESD (anti-static) precautions when handling boards.
• Double-check every connector and cable when swapping boards.
• Do not force any connectors; they should seat firmly but smoothly.

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Condition & Testing

• Professionally inspected and tested for proper functionality.
• Guaranteed to be a working replacement board for the part numbers listed above.

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Warranty & Returns

• Warranty: 180-Day Warranty
• Boards that have been physically damaged, modified, or show signs of improper installation may not be eligible for return.
• Please keep your original board until your repair is confirmed successful.

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Shipping

• Ships from our facility in Brighton, TN same business day if ordered before 3pm CST.
• Securely packaged to protect the board in transit.
• Expedited shipping options available at checkout.

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If you have any questions about compatibility or installation, please contact us before ordering. We’re happy to help you confirm the correct part.