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If the TV doesn’t have an audio/video input jack, you can connect it to an audio or video output on your computer or another device to listen to the TV’s sound. If the Jack is not working, you can replace the Jack by following these steps: Step 1: Turn off the TV. Step 2 : Unscrew the Jack from the back of the TV.Backlight Modules, as the lighting source of LCDs, consist of light sources, light guides and backlight diffuser plates, etc. As LCD TVs and laptops have become increasingly prevalent, the development focus is to incorporate energy-efficient LED backlight modules into the systems in response to the trend of large-scale and low-profile panels.In short, let’s check its most common problems: Brightness Problem. Backlight not Working. Screen Flickering Issue. Signal Problems. Remote Not Working. Sound Not Working. And many more 🙁. In this article, we are going to cover most of the problems that you may face. To prove you have a dead back: 1. turn the monitor while attached to a computer. 2. take a strong flashlight and shine it at the screen 3. look to see if you can make out any dim indication of an image. *** remember that an lcd screen is like a glass pane. Effectively an LED-backlight is a replacement for the uniform CCFL backlight that gives a LCD TV its brightness. Instead of being always on - and therefore not able to dim in specific areas of the (adsbygoogle = window.adsbygoogle || []).push({}); So, disassembled the TV step by step; disconnected the LVDS cables that went to the T-Con board, Freed the scaler boards from its hold on the frame, removed the panel holding frame from the front and gently removed the panel and shifted it to one Backlight Issue And Jumping Image Problems Resolved In PHILIPS 43PUT6002/56 LED TV By Parasuraman If it’s more than 5 years old, perhaps the TV LED backlight is worn out. When that happens, your TV screen will darken and turn black sooner. Note: LED TVs have an average lifespan of 5 to 10 years. Depending on usage and quality. Here’s how to check if your TV LED backlight is defective: Step 1: Switch on the TV by pressing the POWER button. .