I was recently given a Sony KP-57hw40 which supposedly had a bad flyback (6 flashes I think he said, but he was sure however many flashes meant a bad flyback). I bought the part and installed it and turned it on. It took a minute to come on, and then it came on. I had no input plugged in, but was just looking for menu displays to see it works so I can move it into my living room. IT stayed on for a few seconds then turned off and the led flashed 6 times. I tried turning it on and it came back on. the screen flashed a couple of times and then it went off again and flashed 8 times. Also, when I put the main wire into the flyback, it seemed to not catch as tight as the original was in there, but it wouldnt go down anymore and it did hold a little.
It has a brand new flyback in it. What should I do next (other than give it away for someone else to deal with!)