I can't believe this worked. I've searched and searched for a solution, and almost everything says "it's probably a bad main board that will have to be replaced by a technician." I'm so glad I came across your video. I'm assuming it doesn't work for everyone with a power cycling issue, but it definitely worked for my LG 32LD550. Thanks!
I love this so much. Thank you, Symphony of Science and Mister Rogers. So. Much.