Thanks americanaudio but I already found shopjimmy and ordered the board. Since you were the only to answer gratz best answer.
how did it work for you? i have the same issue with my tv and the repair shop advised it would cost over $300 for just the part and that the part was on back order for over a year?
I am having the same problem with my LG 37LE5500 it takes about 5 cycles of on/off then it works fine.
Could it be the Power Supply board or the Main Control board?
I hope somebody can help with the right answer