Chosen Solution
QN70Q6DTAFXZA https://youtu.be/JswMuvDtIR4 - video of it boot looping. So, the main board and power board and cables are good (replaced them all), screen gets power and lights up full with no issues, however it goes into a boot loop when everything is connected. WHEN I disconnect only the ribbon cable (which is new) the TV boots full, the sound lets me know it is in the operating menu and clicking around dings and selects things properly. Obviously because the ribbon is disconnected the screen (which is on and backlit fine) just has no picture. So the only thing left is this long thin (about 1 in) strip of computer board that runs along the entire bottom of the back that the ribbon cable is plugged into and has connectors that wrap to the front LEDs (I also replaced the metal Y connectors that go to this long stripy board thingy). I cant find this long thin stripy board part anywhere. Please let me know if this is fixable, and how to find this part if that is the answer. Thanks so much, mahalo. - Mike
@firepaint those boards are the LCD driver boards and are considered part of the panel. They are not replaceable since the ribbon cables from those to the LCD are bonded by a special process to the panel. It would be unusual for those to be the cause of a boot-loop, but anything is of course possible. Post a short video about what you refer to as a boot-loop. It sounds like yiu are saying that it works without the display connected but not with it connected. That would mean your panel has failed.
When the panel is toast the game is over. Can’t replace panels in todays market!
