This LED backlight strip, with models JL.D550C1330-004AS-M-V03 and 55D12-ZC22AG-05 303TC550040A, is specifically designed for 55-inch TVs including Panasonic TH-55FS435Q, 55D1200 and TCL L55M5-AD, 55D12-ZC22A. As a key component of the LCD TV display system, it features 12 LED chips arranged on an aluminum substrate, adopting a professional optical configuration to deliver uniform, flicker-free light. With precise 3V voltage and a standardized interface, it ensures perfect compatibility with the original TV circuit and optimal display quality.

LED TV backlight strips Parameters：

LED TV backlight strips Features:

Dual Models Precisely Compatible with Panasonic & TCL 55-Inch TVs This backlight strip set includes models JL.D550C1330-004AS-M-V03 and 55D12-ZC22AG-05 303TC550040A, specially developed for 55-inch models such as Panasonic TH-55FS435Q, 55D1200, and TCL L55M5-AD, 55D12-ZC22A. The design fully matches original factory specifications, featuring standardized interfaces that require no additional modification or adjustment. They connect seamlessly with the TV’s original driver circuitry. Whether for after-sales replacement or bulk manufacturing, the strips deliver fast compatibility and stable system performance, providing a highly efficient and reliable backlight solution for Panasonic and TCL 55-inch TVs.

12 LED Chips Deliver High-Definition Picture Quality Each strip carries 12 high-brightness LED chips, professionally calibrated to ensure excellent brightness uniformity with no flicker or dark areas. Light is evenly diffused through the light guide plate, producing a soft and uniform surface luminance with natural color accuracy. Dark scenes remain detailed and clear, while bright areas appear vivid without glare. From HD video playback to everyday viewing, the strips deliver fine, realistic picture performance and enhanced visual comfort for users who value high-quality displays.

Aluminum Substrate for Stronger Heat Dissipation and Durability Built on a high-quality aluminum substrate, the backlight system delivers heat dissipation far superior to common materials, rapidly transferring heat generated by the LED chips to maintain optimal operating temperature. Paired with precise packaging technology, the overall structure is strong, oxidation-resistant, and highly durable. With a lifespan of over 50,000 hours, the strips maintain stable performance long-term, reduce failure rates, and lower maintenance costs—perfectly meeting the durability needs of TV backlight components.

Stable 3V Voltage Balances Efficiency and Safety Featuring a precise 3V voltage design, the strips operate at low power while fully supporting the brightness output of all 12 LEDs. Voltage remains highly stable with minimal fluctuation, and the built-in over-voltage protection prevents LED burnout or circuit damage caused by power irregularities. Reliable power delivery ensures consistent picture quality, protects internal TV components, extends the lifespan of the television, and provides a balance of performance and safety.

Standardized Interface for True Plug-and-Play Installation Designed according to original factory interface standards, the strips perfectly match Panasonic and TCL 55-inch models and offer plug-and-play installation. No special tools or advanced skills are required—both technicians and everyday users can complete replacement quickly. The 4-piece/set configuration fits the exact backlight layout requirements, functioning normally without extra calibration, significantly reducing installation time and labor cost for a simple, efficient, and worry-free replacement process.

Strict Quality Control Ensures Reliable Performance Each strip undergoes multiple rounds of stringent testing, including high/low temperature tests, vibration tests, and long-duration lighting tests, ensuring reliable performance under various operating conditions. Core components are selected from high-quality materials, and the entire production process follows strict industry standards with full traceability from raw materials to final packaging. With a mature quality control system, these backlight strips deliver dependable performance and durability, helping televisions restore outstanding display quality.

LED TV backlight strips Application :

LED TV Backlight strips FAQ：

Q: How do I accurately determine the size and specifications of the backlight strip I need?

A: You should provide the specific details of your TV model or the dimensions and other specifications of the old backlight strip. Based on this information, we'll be able to suggest the most suitable backlight strip products for you.

Q: What other less - common signs might indicate the need to replace the backlight strip?

A: Besides the common signals like uneven screen brightness, black screen, flickering, or color distortion, issues such as a sudden decrease in overall screen brightness, a faint humming sound coming from the backlight area, or a discolored glow in certain parts of the screen could also suggest that the backlight strip needs replacement.

Q: Why do you recommend purchasing a complete set of backlight strips instead of a single one?

A: A complete set ensures consistent performance and appearance. All the strips in a set are manufactured under the same quality control standards, which helps maintain uniform brightness and color across the screen. When used together, they are more likely to function optimally and have a longer combined lifespan compared to using single strips randomly.

Q: Can I get a refund if I change my mind after purchasing a single backlight strip?

A: If you change your mind after purchasing a single backlight strip, you can request a refund within a specific time frame (usually [X] days, depending on our policy). The strip must be in its original, unopened condition with all packaging and accessories intact. Contact our customer service to initiate the refund process.

Q: How do I place an order if I need a customized quantity of backlight strips?

A: Whether you need a single strip or a customized quantity, you can place an order either online through our website. Navigate to the product page, select the quantity, and proceed with the checkout. If you have any special requirements or need further assistance, you can also directly contact our sales team. They will guide you through the order - processing and provide detailed purchasing support.

Q: Are there any compatibility issues I should be aware of when replacing the backlight strip?

A: Compatibility is crucial. Ensure that the new backlight strip's electrical specifications, such as voltage and current requirements, match those of your TV. Also, the physical size and shape of the strip must fit the space in your TV. As mentioned, providing your TV model or details of the old strip helps us ensure you get a compatible backlight strip. Incompatible strips may not work properly or could potentially damage your TV.