back light on no screen

Hi, @dpbellbin ,

Sorry to hear about your TV being broken! We can’t provide you with any repair advice right now though because we don’t know exactly what we’re working with. Please update your post to include the make, model, symptoms of your problem, and the troubleshooting you’ve already tried. Also, explain what you mean by "works like dark mode". We also need to know if you have sound.

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 iFixitでの質問に画像を追加する方法 for that so we can see what you see. Try all the different input sources and if you are using an HDMI cable, try a different one as well. This can be an issue with the T-con board, the main board or the Panel. We do need more information to actually provide you with a more concise answer.