1. Introduction
This manual provides essential information for the installation, operation, maintenance, and troubleshooting of the XGEDA TP.MS3393 Series LCD TV Motherboard. This is a 'three-in-one' motherboard designed for various LCD TV models, integrating the main board, power board, and typically the backlight driver into a single unit. Our motherboards are thoroughly tested to ensure quality before shipment.

Figure 1: Front view of a TP.MS3393.PB751 Motherboard variant.
2. Setup and Installation
2.1. Compatibility Check
Before attempting installation, it is crucial to verify the compatibility of this motherboard with your specific television model. Carefully compare the model number of your original TV motherboard and your TV's overall model number with the specifications provided for the TP.MS3393 series. Incorrect model matching can lead to malfunction or damage.

Figure 2: Guide to identifying TV components and model information.
2.2. Safety Precautions
- Always disconnect the television from the main power supply before beginning any installation or repair work.
- Discharge any residual power by holding the power button for a few seconds after unplugging.
- Wear anti-static gloves or use an anti-static wrist strap to prevent electrostatic discharge (ESD) damage to sensitive electronic components.
- Work in a clean, well-lit, and dry environment.
2.3. Installation Steps (General)
Replacing a TV motherboard requires technical knowledge and precision. If you are not confident in performing this procedure, it is highly recommended to seek assistance from a qualified technician.
- Carefully open the back panel of your television, following your TV's specific service manual instructions.
- Locate the existing motherboard. Refer to Figure 2 for identification.
- Gently disconnect all cables and connectors attached to the old motherboard. Take photos or make notes to remember the connection layout.
- Remove the screws securing the old motherboard and carefully lift it out.
- Position the new XGEDA TP.MS3393 Series Motherboard in place and secure it with the screws.
- Reconnect all cables and connectors to their appropriate ports on the new motherboard. Ensure all connections are firm and correctly oriented.
- Before fully reassembling the TV, perform a preliminary power-on test to ensure basic functionality.
- If the test is successful, carefully reattach the TV's back panel.

Figure 3: A TP.MS3393.PB801 Motherboard variant.
3. Operating Instructions
Once correctly installed, the XGEDA TP.MS3393 Series Motherboard functions as the central control unit for your television. It manages video processing, audio output, input signal handling, and power distribution. There are no direct operating controls on the motherboard itself; its operation is integrated with the TV's existing remote control and on-screen display (OSD) menu system. Refer to your television's user manual for specific operating instructions.
4. Maintenance
The TP.MS3393 Series Motherboard is designed for long-term reliability with minimal maintenance. To ensure optimal performance and longevity:
- Keep it Clean: Ensure the interior of your TV remains free from dust and debris. Dust accumulation can lead to overheating and component failure. Use compressed air to gently clean the board if necessary, ensuring the TV is unplugged.
- Avoid Moisture: Protect the television from liquids and excessive humidity, which can cause short circuits and corrosion.
- Proper Ventilation: Ensure the TV's ventilation openings are not blocked to allow for adequate airflow and prevent overheating.
- Professional Servicing: For any internal cleaning or inspection beyond basic dust removal, consult a professional technician.
5. Troubleshooting
If you encounter issues after installing the motherboard, consider the following troubleshooting steps:
- No Power/No Display:
- Verify that the TV is properly plugged into a working power outlet.
- Check all internal power connections to the motherboard and power supply board.
- Ensure the TV's power button or remote control is functioning correctly.
- Incorrect Display/No Signal:
- Confirm all video input cables (HDMI, AV, etc.) are securely connected to both the TV and the source device.
- Ensure the correct input source is selected on the TV.
- Check the LVDS cable connection between the motherboard and the display panel.
- Audio Issues:
- Check speaker connections and external audio device connections.
- Verify audio settings in the TV's menu.
- Compatibility Issues:
- If the TV does not function at all or exhibits unusual behavior, double-check that the motherboard model precisely matches your original board and TV model. Incompatibility is a common cause of issues.
- Product Faulty Upon Receipt:
- If the product appears faulty immediately upon receipt or during initial installation, please contact XGEDA Professional LCD Accessories Store customer support immediately for assistance.
6. Specifications
| Feature | Detail |
|---|---|
| Product Type | TFT LCD TV Motherboard |
| Model Series | TP.MS3393 (P86, PB801, PB851, PB751, PB855, P85 variants) |
| Functionality | Three-in-one (Main Board, Power Board, Backlight Driver) |
| Origin | Mainland China |
| Package Dimensions (L x W x H) | 34 cm x 24 cm x 7 cm |
| Package Weight | 0.42 kg |
7. User Tips
- Verify Model Numbers: Always double-check the exact model number of your existing motherboard and your TV model before purchasing and installing. This is the most critical step to ensure proper function.
- Professional Installation: If you are not experienced with electronics repair, consider professional installation to prevent damage to the board or your TV.
- Regional Compatibility: Confirm if the motherboard is compatible with your specific region's broadcasting standards and power requirements, especially if you are outside of the standard regions.
8. Warranty and Support
The XGEDA Professional LCD Accessories Store is committed to providing quality products and support. All motherboards are tested before shipment to ensure they are in good working condition.
- Pre-sales Consultation: For any questions regarding product compatibility or specifications before purchase, please contact our customer service team.
- After-sales Technical Support: If you encounter any issues with the product after installation, our team is available to provide technical assistance.
- Returns for Faulty Products: In the event that the product is faulty upon receipt or during initial use, please inform us immediately. We offer free returns within 90 days for product-related issues.
For support, please contact XGEDA Professional LCD Accessories Store directly.