led lamp bead light bar tester disassembly-free screen led backlight lcd tv maintenance inspection LED 灯珠灯条测试仪 免拆屏LED背光液晶电视维修检测

Size: 180*105*40 mm
Weight: 254.5 g
Name: LED Bulb and Strip Test Equipment
Screen removal-free LED backlight LCD TV repair and testing, light beads, light strips, light panels, light bars, tester, light driver
0-300V High-Brightness Without-Screen Replacement Panel: Input voltage: 85-265V, output voltage: 0-300V, power: 18W. Output voltage and current are automatically detected. Suitable for testing LEDs with backlight and light beads of any size. High brightness; the quality of the backlight can be determined without removing the screen.
Precautions:
When it is uncertain which terminal is positive and negative, please use a 19V voltage to detect the terminals; the use of a 300V voltage is prohibited. A 300V voltage may cause device damage. Short the pen’s positive and negative terminals for three seconds to switch between high and low voltages.
The functional features are as follows:
1. Use a high-speed microcontroller for voltage sampling testing, and drive an LED light to display the voltage (this is not a voltmeter head purchased from other products on the market; it is installed separately) to achieve integrated board design and reduce defective rates (since the current is constant, only the voltage display function is performed).
2. 0–300V adaptive voltage, suitable for testing most series and parallel LED chips. During testing, a gradual start method is used, with the voltage automatically adapting and the current increasing gradually. The LED chips will never be damaged, and normal brightness can be achieved within three to five seconds. If the positive and negative terminals of the light strip and LED chips are reversed, neither the light strip nor the LED chips will be damaged.
3. The digital display shows real-time voltage output, with an adjustable voltage setting, and the voltage value can be corrected by oneself. The digital meter uses green light-emitting tubes; a display of 000 indicates a short circuit, while a display of 300V indicates an open circuit. The voltage displayed by each LED strip set on the same LCD TV should be consistent.
4. Isolated between hot and cold, no risk of electric shock. The power cord and casing are integrated for easy portability when out.
5. It is possible not to remove the screen, and to power on the LCD TV screen. (The same way as powering on a screen with faulty LEDs; LCD TVs are generally divided into several groups connected in parallel. The voltage can be used to determine which group has different voltage, thereby identifying which LED LEDs are damaged.)
6. During testing, due to the highlighted version, do not look directly at the LED bulb to avoid eye damage.