I need help with a lcd tv. The model number is 42MF521D/37. It quit one day and wouldn't turn on, no picture, no sound. The led continuously flashed. Then one day I tried it and nothing worked not even the led. I looked it over and didn't see any blown fuses. I didn't have the test equipment to check the caps. so I took it to a local shop. They checked it out and said they had to replace some of the caps. I took it home and plugged it in and nothing. There now is no sound or picture. Now the led flashes 1 short flash, a short pause, 1 long dim flash, followed by 1 long bright flash. There isn't a pause between the dim and bright flash. Please help!