Chosen Solution

JVC 55inch Smart TV When switched on it stops at the Screen Saver written “WISDOM . SHARE Smart cloud TV” no pictures but sound is on

@aubs240 could be the backlight (since you still have audio) or the T-con board (creates issues like this). In a darkened room shine a flashlight beam at an angle against the screen. See if you can make out the screen (saver) etc. Let us know what you find. Also, let us know the exact model of your JVC TV.