Chosen Solution
Samsung QN70Q6DTAFXZA, latest firmware updated. Images uploaded are examples of graphical errors it occasionally displays. So if I get home from work and turn on my tv it works fine for a few minutes, pull up a 4k youtube video and scroll the menu a bit. After a few minutes of this it will reboot. When it boots back up the problems begin. Stuttered boot up, lines appear on image, reboots as soon as remote is used. I’ve tried disconnecting each side of the panel but there are no boot issues when disconnected individually. Ocassionally it will turn on and begin faulting immediately and sometimes it takes more than 5 minutes. The image quality is flawless until these issues flare up. Once they do they won’t go away until it’s been unplugged for 30 or so minutes. It also seems that when I start using the remote a lot(flipping through menus etc.) it can trigger the issues. I’m thinking at this point with this many sporadic issues it may just need a new mainboard. Any thoughts? I’m going to be testing the voltage on the mainboard tonight.
@zakh4111 this “Stuttered boot up, lines appear on image, reboots as soon as remote is used.” is common with failure of the signal processing IC failures. It is part of the T-con circuitry (I believe your set is having the T-con board integrated onto the main board. Sometimes you can make the determination by measuring the voltages going to it etc., but for that we would need to have schematics for your main board available (post some good pictures of your boards with your QUESTION). Use this guide Adding images to an existing question - iFixit Repair Guide for that. Other times you can try and utilize freeze spray on your main board and see if that eliminates those lines etc. If so, you once more know that the issue is the processor.
