Chosen Solution
Hello, Above Samsung Smart TV went dark. Sound is there and picture but it is dark. I have tried all tests and Samsung Online support but it did not help. They advised to call repair service technician. Please help me if possible because technician can be more expensive then TV.
lafusrcu sounds like a bad inverter board. Remove the back of your TV and check all the boards. Post an image of your boards with your question. That will allow us to see what you see. Use this guide for that
