Chosen Solution
I have a Hisense Roku tv. The screen is black when plugged in i can read hisense roku tv with a flashlight then it goes away and the words come back. I have tried unplugging for over 60sec. I tried unplugging for 60sec and holding power button for 30sec. I have also tried changing different outlets. Also the red light will blink or turn off for a second when the words go away. I have also unpluged the cord from the tv and changed it with another tv and the other tv comes right on and this one does the same thing. Any ideas?
@sonofdolph77 if you can see the words when you shine a flashlight against the screen, then it is your backlight that is not turning on. The blinking red light will not happen if this is a backlight LED only error. This sounds more like a board error. Check your power board and your main board. Measure the BL_On voltages with a multimeter. The main board commonly causes black screen and no sound. It might work better if you can give us your TV’s model number and post a couple of good pictures of your boards. Use this guide Adding images to an existing question for that.
