Chosen Solution
I have a jvc lt-55ue76 55 4k, I will get a picture then the screen will go black after a couple minutes, back lights remain on. I have already changed the main/power board but that didn’t fix it. Any suggestions?
@usbp07 if you already changed the power and the main board then the only board you have left is the T-con board. It is possible that it could be the culprit but it could also be the panel. Make sure that all the settings on your TV are right and disconnect every video input source. If you are using some kind of cable box, you want to disconnect that as well. Then use one input only, something like a DVD player or game console and see if that makes a change.
