LED Backlight Strip Instruction Manual

1. Introduction

This manual provides essential information for the safe and effective installation, operation, and maintenance of your new LED backlight strips. These strips are designed as replacement parts for specific 65-inch TV models. Please read this manual thoroughly before proceeding with any installation or repair work.

Important Safety Notice: TV repair and component replacement should only be performed by individuals with appropriate technical knowledge and experience. Always disconnect the TV from the power supply before beginning any work. Improper installation can lead to electric shock, damage to the TV, or personal injury.

2. Product Specifications

Package Dimensions and Weight:

• Length: 64 cm
• Width: 5 cm
• Height: 5 cm
• Weight: 0.45 kg

3. Package Contents

Upon opening your package, you should find the following items:

• 12 x LED Backlight Strips (each 603mm in length with 6 LEDs)

Description: This image displays all 12 LED backlight strips, showing their uniform length and the arrangement of individual LED beads along each strip. The strips are designed to replace the full backlight array in compatible TV models.

Description: A similar view to Figure 3.1, providing another perspective of the complete set of 12 LED backlight strips, including visible model identifiers.

4. Installation Guide

Replacing TV backlight strips requires careful handling and technical expertise. If you are not confident in performing this repair, it is recommended to seek professional assistance.

4.1 Safety Precautions

• Always unplug the TV from the power outlet before starting.
• Discharge any residual power by holding the power button for a few seconds after unplugging.
• Wear anti-static gloves to prevent damage to sensitive electronic components.
• Work in a clean, well-lit, and spacious area.
• Handle the TV panel and internal components with extreme care to avoid breakage or damage.

4.2 Step-by-Step Installation

1. Prepare the TV: Place the TV face down on a soft, clean surface to protect the screen.
2. Remove Back Cover: Carefully unscrew and remove the TV's back cover. Keep track of all screws.
3. Disconnect Cables: Disconnect all cables connected to the main board, power supply board, and T-con board.
4. Remove Bezel and Frame: Carefully remove the TV bezel and any internal frames that secure the LCD panel.
5. Remove LCD Panel: With extreme caution, lift and remove the LCD panel. It is highly recommended to have another person assist with this step to prevent damage. Place the LCD panel face down on a separate, safe, soft surface.
6. Access Diffuser Layers: Remove the diffuser sheets and reflective layers to expose the old LED backlight strips.
7. Remove Old Strips: Disconnect the power connectors from the old LED strips. Carefully peel off or unscrew the old strips from the TV chassis.
8. Install New Strips: Align the new LED backlight strips in their designated positions. Ensure the polarity (+/-) matches the connectors. Secure them using adhesive backing or screws, depending on the TV model.

Description: This diagram illustrates how the 12 LED strips are typically arranged horizontally across the back panel of a 65-inch television, providing uniform illumination.

9. Connect Power: Connect the power cables to the new LED strips.
10. Test Backlights: Before reassembling, temporarily connect the TV to power and turn it on to verify that all new LED strips illuminate correctly. Immediately disconnect power after testing.
11. Reassemble TV: Carefully place the diffuser layers and reflective sheets back into position. Reinstall the LCD panel, ensuring it is perfectly aligned. Reattach the internal frames, bezel, and finally the back cover. Reconnect all internal cables.
12. Final Test: Plug in the TV and power it on to confirm full functionality.

4.3 Component Details

Description: This image shows a detailed view of the connector on one end of an LED strip, including the 'D6' marking and clear '+' and '-' polarity indicators, crucial for correct installation.

Description: A close-up view of the LED strip, highlighting the printed model number 'HRS_SQY65D3_6X12_2W_MCPCB 12mm_V2', which is important for compatibility verification.

Description: This image provides a detailed look at one of the LED lenses on the strip and the robust metal core PCB (MCPCB) backing, indicating good heat dissipation properties.

5. Operation

Once correctly installed, the LED backlight strips operate automatically as an integral part of your television's display system. They will illuminate when the TV is powered on and provide the necessary backlighting for the LCD panel. No separate controls or adjustments are required for the backlight strips themselves.

6. Care and Maintenance

These LED backlight strips are designed for long-term, maintenance-free operation once installed. However, proper care during and after installation can prolong the life of your TV components:

• Dust Prevention: Ensure the TV's internal components are free of dust before reassembly. Dust can hinder heat dissipation and potentially shorten component lifespan.
• Avoid Physical Stress: Do not bend or apply excessive force to the LED strips during installation or handling.
• Temperature Control: Operate your TV in a well-ventilated area to prevent overheating, which can degrade LED performance over time.

7. Troubleshooting

If you encounter issues after installing the new LED backlight strips, consider the following:

• No Backlight / Dim Screen:
  • Check all power connections to the LED strips and the power supply board. Ensure they are securely seated.
  • Verify that the polarity (+/-) of the LED strip connectors is correct.
  • Confirm that all 12 strips are properly installed and connected. A single faulty connection can prevent the entire backlight system from working.
  • Ensure the TV's power supply board is functioning correctly.
• Uneven Backlight / Bright Spots:
  • Check the placement of the diffuser sheets and reflective layers. Ensure they are clean, free of dust, and correctly aligned.
  • Verify that the LED strips are flat and securely attached to the chassis, without any gaps or unevenness.
• Flickering Backlight:
  • This could indicate a loose connection or a faulty power supply to the LED strips. Recheck connections.
  • Ensure the TV's power supply is stable.

If troubleshooting steps do not resolve the issue, professional repair service may be required.

8. User Tips

• Verify Compatibility: Always double-check the model numbers on your existing backlight strips against the product specifications before purchase to ensure full compatibility.
• Gentle Handling: The LED strips are delicate. Avoid touching the LED lenses directly and handle the strips by their edges.
• Organize Screws: During disassembly, use a magnetic mat or labeled containers to keep track of different types and sizes of screws.

9. Warranty and Support

For any questions regarding product functionality, compatibility, or potential defects, please contact the seller, Lijin Technology Store, directly. They can provide specific guidance and support related to your purchase.

Please retain your proof of purchase for any warranty claims or support inquiries.