Features:<br> 1. Universal LED LCD TV backlight constant current board.<br> 2. Realize the 10-1000MA current setting.<br> 3. Support 14-42 inch LCD TV backlight.<br> 4. The LED light bar voltage is automatically adapted to 88V or less.<br> 5. Suitable for players DIY operation, fix TV backlight problem.<br> <br> Specification:<br> Color: green<br> Support size: 14-42 inch<br> Input: 11-28V<br> Output voltage: 15-88V LED strip adaptive<br> Current: 10-1000MA can be set<br> Size: 9.4 * 5.5 * 1cm / 3.7 * 2.2 * 0.4in<br> Weight: approx. 31g<br> <br> Package list:<br> 1 * Board<br> <br> Precautions:<br> 1. You need to have a certain basic knowledge of electronic and electrical engineering in the physics department, familiar with or probably understand the working principle, characteristics, representation symbols of various electronic components.<br> 2. Need to have a clear understanding of the core components of liquid crystal displays, LCD TVs and other products (such as which parts are usually composed of products, where is the power supply, where is the main control board, where is)<br> 3. The common electronic symbol code of the backlight board is as follows:<br> VCC: power supply voltage positive, circuit supply voltage (voltage is usually 12V or 24V)<br> b. ON/OFF, ON, EN, ON_BL, etc.: switch pin, switch signal pin (voltage range is usually between 2.5V-5V)<br> c. PWM, PDIM, VDAJ, BL-PWM, etc.: brightness adjustment feet or dimming feet. (Dimming will have two modes, one is digital mode-PWM, the other is analog dimming-DC<br> PWM is called pulse width adjustment, it produces a rectangular square wave signal, the frequency is generally 200HZ-2KHZ, the voltage amplitude is usually 3.3V, PDIM is shorthand for English, and Dim is dark meaning vocabulary probably means "brightness". Analog dimming is performed by DC voltage, usually by directly supplying 0V-5V DC voltage to the pin to control the brightness. )<br> GND: ground (power supply negative)<br> LED+: LED (light bar) positive<br> LED-: LED (light strip) negative<br> The above symbols contain most of the commonly used codes on the LCD motherboard and the backlight board. It is not wrong to connect them according to the respective codes.<br> <br> Common problem:<br> Question 1: Can a constant-current driver board of a certain size TV be used instead?<br> A: As long as the working voltage of the light bar is below 80V, no matter how many inches of TV, this product can light it. Note: What is said here is just lighting, not to say that it is suitable. The best way to get the exact answer is to provide the backlight module parameters of the panel (the working voltage of the light bar, the rated current, etc.). If we can provide accurate data, we can do a "private customized" service.<br> Then again, what if you can't determine how many volts the light bar is? At this time, there is a very simple way to find the constant current driver board on the original machine to see the output voltage of the output filter electrolytic capacitor is how many volts? If it is 100V withstand voltage, it means that its light bar voltage will not exceed 80V, then my product can be spotted, and it can be taken decisively.<br> One thing to note after knowing that the voltage can be lit up is about the current. The size of the LED lamp bead determines the rated current it needs, but for various reasons, the module factory will use a variety of different specifications of the lamp to produce a variety of rated operating current. In order to solve this problem, we all recommend using our standard parameters for models above 26 inches: constant current 480 mA, if it is 24 inches or less, the current is reduced to half, 240 mA. Here we have to explain the real problem: 480MA is not a suitable screen for 26 inches or more, just choose the approximate value for the case where the exact parameters cannot be determined. According to the data returned by many users before, it is suitable to use this current, but occasionally too bright, etc., the easiest way is to solve the problem by dimming the function foot, connect the dimming foot After Vadj, the brightness is dimmed.<br> 1、Universal LED LCD TV backlight constant current board 2、Realize the 10-1000MA current setting 3、Support 14-42 inch LCD TV backlight 4、The LED light bar voltage is automatically adapted to 88V or less 5、Suitable for players DIY operation, fix TV backlight problem