blue light flicks on just for a while than it turns off again.

moseswilliam69  this could be caused by multiple issues. I would start by removing the back of your TV. Then check the power board and the main board. We would need to know your TV’s exact model. also keep in mind the Cornea is a bit of and off brand and they use Samsung and LG panels, tuners and other boards. Post some good pictures of your boards and the wiring etc. with your question. That will allow us to see what you see. Use this guide Adding images to an existing question for that. From what you are describing I would suggest to ceck the capacitors on the power board for any bulging or leaking.