Shenzhen Xieyuanxin Optoelectronics Co., Ltd

How to repair the LCD TV by modifying the light bar current? The LCD TV is repaired, there is sound but no image when starting up, the backlight is not bright, it is determined that the back backlight is broken, and the backlight strip is replaced, so turn on the LCD TV for repair. After replacing the strip, I am afraid that the current of the strip will be too large and it will not take long If the time is still broken, then change the current of the high-voltage board circuit. This LCD TV is 38V parallel with 3 light bars 6V 6leds, and the output is about 39V. Generally, the voltage and current of the original board are slightly larger and the brightness is bright. After repairing/finding the negative feedback current resistance of the light bar, 1R201R20 is a total of 4 feedback resistors, 2 must be removed, so I removed two resistors, so that the current is reduced, and the voltage is also reduced to 35.5V, so that the light bar can be used It won't be bad for a long time.

Why use LED as the backlight of LCD TV ? The main purpose of using LED as the backlight source of LCD TVs is to improve the picture quality, especially in terms of color saturation. The display screen of LED backlight technology can achieve a wide enough color gamut to make up for the defect of insufficient display colors of LCD devices. It can meet or exceed the requirements of Adobe RGB and NTSC color standards, and can reach NTSC ratio of more than 100%. Among them, Sony has introduced LCD TV panels with LED backlights, with special emphasis on bright red and dark green performance, which can display more lifelike than previous methods. s color. At the same time, because of the flat light source characteristics of the LED, the LED backlight can also realize the sub-regional color and chromaticity adjustment function that CCFL cannot match, so as to achieve more accurate color reproduction to meet the needs of graphic publishing and graphic design work. The dynamic adjustment of can

LG 32LS3400 Parts For TV Repair LED Backlight Strips LED Bar Most TVs today are LED TVs with great visuals that capture almost every detail you want to see. From standard Full HD TVs with all the connections and ports you need for a great experience, to Internet Smart TVs that let you watch more online and on external devices, to visual masterpieces 4K Ultra HD TVs, you can check out the range , these ranges give you almost a complete viewing experience. Led Backlight Replacement kits Description Item type LG 32LS3400 Pcb Matetial Aluminum Original Code 6916L-1030A 6916L-1031A 6916L-0881A 6916L-0923A Size 646mm LED Source 3030/3535 TV backlight lens Original lens from Korea One complete set 4pieces/SET Package Packing with tray, Export carton Warranty 1 year, if any problem, refund full Delivery Sample 1-2days, mass order 3-15 days after payment confirmed How to replace Tv Led Backlight ? Backlighting is at the heart of how TVs work. TVs work by allowing a filter system on the back of