I recently purchased a Kodak DP900 which was sold as is which claimed to no power on, I did plug in the power and a lamp, and it powers on and the light on the lamp works. However after the color-wheel fully spins there is nothing but a white picture, I do get sound on RCA components. But I don't get the picture, everything is all white and I cannot figure out if it's something around with the ballast or is the controller board not working properly. everything works except i get nothing but a white screen.