Scree is nat visible

@shivasinghal four words is all you are going to give us? How do you expect to fix your TV if you do not give us more history? Things like the exact model of your TV, what it does, or does not do; what you have tried to fix and what you found out while trying to fix this, would be so helpful. You are also not telling us if it has audio etc.

@shivasinghal you have not told us what you have checked. The no video issue can be related to a bad backlight inverter circuitry. A simple check for that would be to darken the room and turn the TV on. Then use a flashlight and angle the light at the screen on different areas. you might make out some shadows or see a slight grey color. Your model uses an backlight circuit on the power supply board. So replacing that should repair your TV.

First you need to verify that you have no image on all inputs. Try all of those. If it remains dark, unplug everything that is plugged in the back of your TV. unplug the TV and push the power button for about one minute, then plug it back in. See if that resets your TV.

If it remains dark, turn the TV to a channel where you can hear the sound. Next, use a flashlight and shine the beam at an angle against the screen. See if you can make out shadows or shapes. If you do, then it is your backlight that has failed. If you do not see anything, unplug your set and remove the back cover. Then visually check the boards for any obvious damage like domed or leaking capacitors. Check all the wiring and unplug the wires and plug them back in, make sure they are properly seated. Post some images of all of your boards with your question. Use this guide 在已经存在的问题里加入图片 for that so we can see what you see. It is possible that this is either a power board issue or a T-con board issue.

While you work on your TV, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same problem as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.

Repair is War on Entropy