Product Description for LED Lamp Bead and TV Backlight Tester Elevate your electronics troubleshooting capabilities with our innovative LED Lamp Bead and TV Backlight Tester. This versatile tool is essential for anyone looking to efficiently diagnose and repair LED lighting problems in a variety of devices. Integrated Microcomputer Technology: Our tester utilizes a high-speed single-chip microcomputer for precise voltage sampling, directly driving the LED lamp to display voltage. This integration eliminates the need for separate voltmeter heads, reducing the defective rate and ensuring reliable performance with constant current flow. Adaptive Voltage Range: Designed to handle a wide voltage range of 0-300V, this tester is perfect for most series and parallel lamp bead tests. It uses a gradual startup mode to automatically adjust voltage and increase current smoothly, preventing lamp beads from burning out. Normal brightness is achieved in just three to five seconds, even if the polarity is reversed. Real-Time Digital Display: Featuring a digital display for real-time voltage output, the tester allows for adjustable and self-calibrated voltage settings. The green light-emitting tube clearly indicates "00" for short circuits and "300V" for open circuits, ensuring consistent voltage readings for each LED light bar group in the same LCD TV. Safe and Portable Design: With cold and hot isolation, this tester provides protection against electric shock, ensuring user safety. Its integrated design combines the power cord and machine box for easy portability, making it ideal for on-the-go testing and repairs. Efficient Screen Testing: Light up LCD TV screens without disassembly. This tester can illuminate screens with faulty lamp beads, using voltage discrepancies to identify and diagnose damaged LED lamp beads quickly and accurately. Enhance your toolkit with our LED Lamp Bead and TV Backlight Tester, combining advanced technology, robust safety features, and user-friendly operation. This essential device is perfect for professionals and DIY enthusiasts, ensuring precise and efficient LED testing and repairs every time.