I have encountered a similar problem before. To fix a black screen TV, I recommend trying the following: Use this helpful web page I found -
https://crosshair.reviews/info/how-to-fix-a-tv-with-a-black-screen/. It contains detailed instructions on how to diagnose and possible solutions for a black screen on your TV. First, check the power and make sure the TV is on. If it is on but the screen remains black, try changing the signal source or input port. Sometimes this can solve the problem. If that doesn't work, the next step is to reboot the TV. Unplug it for a few minutes and then turn it back on. This will help reset temporary settings and possibly fix the black screen. If rebooting doesn't work, try checking the connection of the HDMI cable or other connection you're using. Make sure the cable is securely connected to the TV and other device. It could be that the cable is damaged or faulty, so try replacing it with another cable to rule out the possibility of a cable problem. If all of the above steps have failed, you can try performing a factory reset on your TV. Refer to your TV's user manual or visit the manufacturer's official website for information on how to perform a reset. If none of the above solves the problem, it is recommended that you contact the manufacturer's service center or a qualified technician. They will be able to perform a more detailed diagnosis and repair of your TV. Hopefully, these recommendations will help you get your black-screen TV working again. If you have any additional questions, feel free to ask. Good luck in solving the problem!
