Enhance your LCD TV repair and maintenance tasks with this advanced LED Lamp Bead TV Backlight Tester, designed for precise and safe voltage testing of LED lamp beads. Featuring a high-speed single-chip microcomputer for voltage sampling and LED-driven voltage display, this tester integrates the measurement system on a single board, significantly reducing defect rates and ensuring reliable performance without the need for separate voltmeter heads. Key Features: · High-Speed Microcomputer Voltage Sampling: Utilizes a built-in microchip to accurately sample voltage and drive LED display, providing integrated and reliable voltage testing for LED lamp beads. · Wide Voltage Adaptability (0-300V): Suitable for testing most series and parallel LED lamp beads, the tester automatically adapts voltage with a gradual startup mode, increasing current steadily to prevent damage while achieving normal brightness within 3 to 5 seconds. · Reverse Polarity Protection: Allows connection of lamp bars and beads with reversed positive and negative poles without causing burns or damage, ensuring safe and convenient testing. · Digital Real-Time Voltage Display: Equipped with a green LED digital meter that shows real-time output voltage, adjustable and self-calibratable. Displays “00” for short circuit and “300V” for open circuit, enabling easy identification of faulty LED groups. · Safe Cold and Hot Isolation Design: Ensures no electric shock during operation, with an integrated power cord and machine box design for enhanced portability and ease of use during fieldwork. · LCD TV Screen Testing Without Removal: Enables lighting of the LCD TV screen without removing the screen, facilitating quick detection of bad lamp beads by comparing voltage differences across parallel groups in the TV backlight. Specifications: · Item: LED Lamp Bead TV Backlight Tester · Material: Durable ABS · Input Voltage: 85-265V AC · Output Voltage: Adjustable 0-300V · Power: 18W · Size: 10.4 x 3.6 x 6.3 cm · Package Size: 18 x 10.5 x 4 cm · Package Weight: 255g Important Usage Notes: When positive and negative poles are uncertain, use 19V output to detect polarity; avoid using 300V for polarity detection to prevent equipment damage. Short circuit the pen for three seconds to switch between high and low voltage modes. Package Includes: · 1 x LED Lamp Bead TV Backlight Tester · 1 x Pair of Test Probes This LED Lamp Bead TV Backlight Tester is an essential diagnostic tool for technicians and hobbyists working on LCD TV backlight repairs. Its precise voltage control, integrated design, and safety features make it a reliable and efficient solution for identifying faulty LED lamp beads without risking damage to the components or the tester itself.