Chosen Solution
I’m getting flickering horizontal and vertical lines. Sometimes this issue stops when changing between apps in the Roku menu and the TV can be used as normal until the power is turned off, sometimes the issue is constant and nothing stops it. Putting pressure on the frame around the screen doesn’t affect it. TV has not been dropped or damaged, and this issue didn’t start until a couple years after purchase.
This will probably be too late to do much good now, but in case anyone else comes across the same problem. My TCL 55P605 TV started having this same problem last week. After doing some research, I took a gamble and purchased a new T-Con board for $25. It only took about 10 minutes to install (remove the back panel, unhook three cables and 4 screws, then reverse) and so far, the TV has been back to working like normal.
@bethzilla … the horizontal lines and double image flickering is caused only by a failed/failing tab gate driver on the lcd panel. to correct properly would be uneconomical to do so as the displays are the majority of a cost of a tv. you can try this method here to see if it helps: https://www.youtube.com/watch?v=j7vl7-vZ… alternatively, you can disassemble the unit to gain access to the displays tabs and gently touch them to try and illicit a response. if one or many change the display at any point, you can try to use some foam to apply pressure when reassembled. follow this guide here: https://www.youtube.com/watch?v=LysMj2Tc… to be honest, these attempts almost never clear the issue. (sometimes with less severe cases it works) youre looking at a new set i.m.o.
