Product Description for LED Lamp Bead and TV Backlight Tester Discover the ultimate solution for testing LED lamp beads and TV backlights with our state-of-the-art LED Lamp Bead and TV Backlight Tester. This essential tool combines precision, safety, and ease of use to enhance your electronic repair and testing tasks. Advanced Microcomputer Technology: Our tester utilizes a high-speed single-chip microcomputer for voltage sampling tests, driving the LED lamp to display voltage. Unlike other products that use separate voltmeter heads, our integrated board card design reduces the defective rate, ensuring consistent and reliable performance with constant current. Adaptive Voltage Range: Capable of handling 0-300V, this tester is suitable for most series and parallel lamp bead tests. It features a gradual startup mode, automatically adjusting voltage and gradually increasing current to prevent burning out lamp beads. This ensures that normal brightness is achieved within three to five seconds, even if the lamp bar and bead are connected inversely. Real-Time Voltage Display: Equipped with a digital display for real-time voltage output, our tester allows for adjustable voltage with self-calibration capabilities. The green light-emitting digital meter indicates short circuits with "00" and open circuits with "300V." It ensures consistent voltage display for each group of LED light bars in the same LCD TV, simplifying troubleshooting. Safety and Portability: Designed with cold and hot isolation, this tester prevents electric shock, ensuring safe operation. Its integrated design, combining the power cord and machine box, makes it easy to carry, perfect for on-the-go testing and repairs. Screen Testing Without Disassembly: Light up the LCD TV screen without removing it. This tester can illuminate screens with faulty lamp beads, identifying voltage discrepancies among parallel groups to pinpoint damaged LED lamp beads efficiently. Enhance your testing toolkit with our LED Lamp Bead and TV Backlight Tester. Offering advanced technology, safety features, and user-friendly design, this tool is an indispensable asset for professionals and DIY enthusiasts alike, ensuring accurate and efficient LED testing and repairs.