I am having problems with No picture after turning on unit. Sometimes it will not sjow picture at all and take about 3 minutes before it shows 3 blicking lights on the TV. other times it will turn on after unplugging the TV fro 5 or moe mintues but only display an image for about 1 -2 minutes then it just jsut blanks out with audio still working. No indication lights on the front and I cannot power off the TV without unplugging it. I recently just replaced the Lamp and Ballast.