My screen is blank but I can see it when I put a flash light on it
When I turn on my TV I am only able to hear sounds coming from it, but when I put a flashlight underneath it I can see the picture very dim and dark. I wonder if I can change out the LEDs inside? Is there a web page that can walk me through the repair and a link or I can purchase the parts?
Sadly the cost of the part may well exceed the cost of replacing the whole thing. I would open it up and examine it for blow capacitors and/or cold solder joints. Use a multimeter to go over the boards and try to spot the problem.