LED Backlight Strip User Manual

1. Introduction

This manual provides essential information for the installation, operation, and maintenance of your new beented LED Backlight Strips. These strips are designed as replacement parts for specific Samsung TV models. Please read this manual carefully before proceeding with any installation or repair work.

Version: 2026/02/01

Last Updated: 01/02/2026

2. Safety Information

WARNING: Replacing the light strip is a very complex task and can easily lead to screen damage. It is strongly recommended to contact professional maintenance personnel for installation. Attempting installation without proper expertise may void your warranty and cause irreparable damage to your television.

• Always disconnect the TV from the power source before attempting any repair or installation.
• Handle the LED strips with care to avoid bending or damaging them.
• Wear appropriate personal protective equipment, such as anti-static gloves, to prevent electrostatic discharge (ESD) damage to electronic components.
• Keep out of reach of children.

3. Product Overview

The beented LED Backlight Strip kit provides replacement LED bars for compatible Samsung TV models. Each kit typically includes 4 pieces of 42-LED, 410mm strips. The strips come pre-equipped with double-sided tape for easier installation.

Overview of four individual LED backlight strips.

Close-up view of the connectors on the LED backlight strips.

Detailed view of the model number 'DL-393 S1A8-750SMO-R0 GS-ALZ 42EA/BAR' printed on the LED strips.

4. Setup and Installation

As stated in the safety information, installation of LED backlight strips is a delicate and complex procedure best performed by professional maintenance personnel. Incorrect installation can lead to irreversible damage to your television screen or other components.

If you are a qualified technician, please follow these general steps:

1. Preparation: Ensure the TV is unplugged and placed on a soft, clean surface. Gather necessary tools (screwdrivers, pry tools, anti-static mat, etc.).
2. Disassembly: Carefully remove the TV back cover, stand, and any internal shields to access the display panel.
3. Panel Removal: This is the most critical step. Gently detach and remove the LCD/LED panel. This requires extreme care to avoid cracking or damaging the screen.
4. Access Backlight: Once the panel is removed, you will gain access to the diffuser sheets and the old backlight strips.
5. Replace Strips: Carefully remove the old LED strips. Clean any residue. Peel the backing from the double-sided tape on the new beented LED strips and firmly press them into place, ensuring proper alignment with the connectors.
6. Reconnect: Connect the new LED strips to the power board.
7. Test: Before reassembling the entire TV, perform a preliminary test to ensure the new backlight functions correctly.
8. Reassembly: Carefully reassemble the TV in reverse order of disassembly, ensuring all cables are properly connected and no components are pinched.

5. Operating Instructions

These LED backlight strips are internal components of your television. Once correctly installed, their operation is integrated with your TV's normal functions. There are no separate operating instructions for the backlight strips themselves. Simply power on your television as usual.

6. Maintenance

The LED backlight strips are designed to be maintenance-free under normal operating conditions. To ensure their longevity:

• Avoid exposing the TV to extreme temperatures or humidity.
• Ensure proper ventilation for your TV to prevent overheating, which can degrade LED performance.
• Do not attempt to clean the LED strips directly once installed.

7. Troubleshooting

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

• No Backlight: Double-check all connections to ensure they are secure. Verify that the power board is functioning correctly.
• Uneven Backlight/Dark Spots: Ensure all LED strips are properly seated and making full contact. Check for any damaged LEDs on the strips (though products are tested before shipment).
• Flickering: This could indicate a loose connection or an issue with the TV's power supply or main board.

If problems persist, it is advisable to consult a professional TV repair technician.

8. Specifications

9. Warranty and Support

Warranty

This product comes with a 180-day warranty from the date of purchase. The warranty covers manufacturing defects. Damage caused by improper installation, misuse, or unauthorized repairs is not covered.

Manufacturer Information

Manufacturer: Xiamen Zhengbai Electronics Co., Ltd
Email: shimei0595@126.com
Address: xiang an ma xiang jie dao fang yang she qu fang yang dong san lu 50-1 hao 602,361101 Xaimen China

EU Authorized Representative

Representative: Apex CE Specialists GmbH
Address: Ravolzhauser str.3la 63543 Neuberg Germany
Phone: +35321-2066339
Email: info@apex-ce.com

For technical support or warranty claims, please contact the manufacturer or your point of purchase.

10. Compliance Information

This product complies with the following certifications:

• CE
• EMC
• GS
• LVD
• ROHS
• UL

LED strips with one blue protective film, indicating newness and care.

A detailed user manual in PDF format is available for download: User manual (PDF)

11. User Tips

• Handle with Care: Always handle the LED strips by their edges to avoid damaging the individual LEDs or the circuit board.
• Cleanliness: Ensure the area where the strips are to be installed is free of dust and debris for optimal adhesion of the double-sided tape.
• Pre-test: If possible, test the new strips with the TV's power supply before fully reassembling the display panel to confirm functionality.