TCL and or roku should be ashamed of themselves for this is it really is some QA issue (software or bad “memory chips / flash memory” ).
I think you are very close to the truth. Watching all of the problems that are occurring, it has been my opinion that what we are seeing is an expression of bad software, overusing flash memory,combined with cheap flash memory which has very limited endurance ratings.
I love how u make it sound so simple... “just swap the main board”.... 1) what is the main board? 2) how is that done? 3) how do we know which board is the main board? 4) is it a plug or do we have to learn how to use that metal pen that heats and softens the aluminum?..... seems daunting and I don’t have a degree in robotics
It is really not that difficult. In my case, replacing the main board (green board) was enough. The first board that I received didn't work, but it was a bad board and the second one they sent worked. Make sure you use the correct model number to order your board.
My model number was 50S425, the board that was sent to me was for 50S421, but apparently they are identical and 50S421 is the exclusive Walmart model, so it worked on a 50S425 TV.
When you get to the part where you have to wait for the light under the tv to remain solid as you continuously push the reset button, be patient. It can take several minutes of repeatedly pushing the reset button before the light becomes a solid white light. Soon as it displays a solid white light, immediate press and hold the button and do not let go until the tv screen flashes the Roku logo screen a few times and then finally displays the Roku Home Screen with your apps.
This fix does not require internet connection or even the usb flash update fix.
This is a known/common issue that occurs when there’s a power outage or TV is not properly turned off and the power is unplugged while the tv is on.
This is NOT a maybe it will work fix. This is a solid fix. Again, be patient when waiting for the solid white light to appear. It’s clearly explained in the attached YouTube video.
I’m literally having the same issues it’s done reset & went back to recovery mode & it did the update in recovery mode & returned to same people screen this is frustrating I haven’t had this 55” a year 🤦🏾♀️