No picture but sound once it goes off there is 3 blinking lights

Samsung 61' model hln617w no picture but sound once its off there is 3 blinking lights..

Most likely for this symptom is the lamp. If you'd like you could sit behind the set and have someone turn it on, you should hear the color wheel spin up and then you should hear the ballast try to fire the lamp, it makes a small arcing sound. If the lamp doesn't light the process starts over again.