Chosen Solution
Samsung 51inch Plasma (2013) model# PN51E535A3F, it turns off and on by itself, plus has a vertical thin line, is this a “Y” sync board?, or a power supply board problem?…otherwise TV works fine. Also the on and off is interminttent, not every day.
Peter C you need to let us know if it does totally off and then back on or if it is just the screen. Single vertical bands are usually caused by a bad X-sus board. The power board will not cause those. Post some images of all of your boards as well as how the boards are arranged in the back of your set and what your display shows It might help if we can see what you see. Use this guide Adding images to an existing question for that You also need to carefully inspect the thin flex cables that enter your panel. See if there is any area that does not look like the others. Apply some pressure on the flex cable that corresponds with the area where your line shows.
