Chosen Solution
So here’s the issue. Half of my 43S431 TCL Roku 43” screen has gone noticeably dim. It does this from the intro logo screen and stays like that while watching things. I have checked for software updates, done a factory reset, and even reset it via the little pin button on the back of the tv to no avail. Unfortunately, I am past the warranty period for this device. Thinking it must be a hardware issue, I opened it up today. But my knowledge is very limited when it comes to boards and capacitors, etc. Can anyone notice anything off with the attached pictures or have any helpful suggestions?
Joshua dim how. Half horizontal or vertical split….makes a difference. It is possible that this is caused by a failed or at least partially failed backlight strip. Check the power supply and measure the voltages on the connector. Let us know what that voltage is
