1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your new 7-piece LED backlight strip kit. These strips are designed as replacement parts for various 55-inch television models, restoring proper display illumination. Please read this manual thoroughly before attempting any installation.
2. Package Contents
Your kit includes the following components:
- 4 x Type A LED Backlight Strips (7 LEDs, 535mm length each)
- 3 x Type B LED Backlight Strips (8 LEDs, 535mm length each)
3. Specifications
| Attribute | Value |
|---|---|
| Item Type | Bar Lights |
| Light Source | LED bulbs |
| Power Source | DC |
| Body Material | Aluminum |
| Luminous Flux | <60 |
| Certification | CE, CCC |
| Model Numbers (Partial List) | LUX0155005, VES550QNDS-2D-N13, LT-55VU73M, 55U6863DB, 55VL5A63D, 55AO4USB, 55AO6USB, LUX0155004, LT-55C870, LT-55C860, LUX015504/01, 55U6763DB, LUX015504, L55UE17, P55US0756A, 55U6663DB, 55HK6T64U |
| Compatible LED Numbers (Partial List) | VES550QNDX-2D-N11, SVV550AK7, Vestel 55" UHD DRT VNB A/B-Type, VES550QNDA-2D-N11, VES550QNDL-2D-N11/N12, VES550QNDS-2D-U11/U12/U13 |
4. Installation Guide
Warning: TV repair involves working with high voltage components. If you are not comfortable with electronic repairs, please seek professional assistance. Always disconnect the TV from the power outlet before beginning any work.
- Preparation:
- Lay the TV face down on a soft, clean surface to prevent screen damage.
- Gather necessary tools: screwdrivers, plastic prying tools, multimeter (optional).
- Take photos at each step of disassembly to aid reassembly.
- Disassembly:
- Remove the TV stand (if applicable).
- Carefully remove the back cover of the TV by unscrewing all retaining screws.
- Disconnect any cables connecting the power supply board, main board, and T-con board.
- Remove the metal frame and any other components covering the display panel.
- Carefully lift and remove the LCD panel and diffuser layers (white sheets) to expose the old LED backlight strips. Handle these components with extreme care to avoid damage.
- Replacing the LED Strips:
- Identify the faulty LED strips. Note the arrangement of 'A' and 'B' type strips.
- Gently peel off the old LED strips. They are usually held in place by adhesive tape.
- Clean any adhesive residue from the TV chassis.
- Carefully place the new LED strips into their correct positions, ensuring the 'A' and 'B' types match the original layout. The kit contains 4 'A' strips and 3 'B' strips. Refer to the images for visual guidance on strip types.
Image 2: Detail of Type A LED backlight strips (7 LEDs). 
Image 3: Detail of Type B LED backlight strips (8 LEDs), showing Vestel markings. - Ensure all connectors are securely attached to the power board.
- Reassembly:
- Carefully place the diffuser layers back into position, ensuring they are clean and free of dust.
- Gently lower the LCD panel back into place.
- Reattach the metal frame and any other components.
- Reconnect all internal cables.
- Replace the TV back cover and secure it with all screws.
- Reattach the TV stand.
- Testing:
- Plug the TV back into the power outlet.
- Power on the TV and check for proper backlight illumination. Ensure there are no dark spots, flickering, or uneven lighting.
5. Operating Instructions
Once correctly installed, the LED backlight strips operate automatically as part of your television's display system. There are no separate user controls for the backlight strips themselves. Their function is to provide uniform illumination for the LCD panel.
6. Maintenance
These LED backlight strips are designed for long-term, maintenance-free operation. To ensure their longevity:
- Keep the interior of your TV free from excessive dust accumulation.
- Avoid physical impact or bending of the strips during installation or any subsequent repairs.
- Ensure proper ventilation for your TV to prevent overheating, which can degrade LED performance over time.
7. Troubleshooting
If you encounter issues after installation, consider the following:
- No Backlight:
- Check all cable connections to ensure they are secure.
- Verify that the correct 'A' and 'B' type strips were installed in their designated positions.
- Ensure the power supply board is functioning correctly (this may require a multimeter and advanced knowledge).
- Uneven or Flickering Backlight:
- Re-check all connections.
- Ensure the diffuser layers are correctly seated and free from dust or debris.
- Confirm that all LED strips are fully adhered and not loose.
- Partial Backlight (some areas dark):
- This often indicates a faulty strip or a loose connection to a specific strip. Re-examine the installation of the affected strips.
If problems persist, it may indicate an issue with other TV components (e.g., power supply board, main board) or an installation error. Professional diagnosis may be required.
8. User Tips
- Compatibility Check: Always verify the exact model numbers of your existing LED strips and TV against the product specifications before purchasing. Even slight variations can lead to incompatibility.
- Gentle Handling: LED strips are delicate. Avoid bending, twisting, or applying excessive pressure to them during handling and installation.
- Organize Screws: During disassembly, use small containers or a magnetic mat to keep track of different types and sizes of screws.
- Cleanliness: Ensure the work area and the inside of the TV are free of dust and fingerprints, especially on the diffuser sheets and LCD panel, to prevent image artifacts.
9. Warranty and Support
For any issues or questions regarding your LED backlight strip kit, please contact the seller or your point of purchase. Keep your purchase receipt as proof of purchase for any warranty claims. If you are unsure about any step of the installation process, it is recommended to consult a qualified electronics repair technician.
