Samsung Smart TV Black Line on Screen – Fixing Guide
Video summary
Samsung Smart TV black lines can be caused by hardware (panel, main board, IC, buffer board, poor connections) or software issues. Run a Picture Test to distinguish hardware from software, check cables and input sources, test alternate sources, update firmware, and use Samsung support or remote service if needed. Repairs include reseating/replacing ribbon cables, replacing capacitors, boards, ICs, or the screen, and ensuring stable power and clean connections.
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