I have a Sony 50 inch projection TV. Model KDS-50A3000. About a year ago I had my first issue with the TV and ended up having to replace the lamp. Since then, no issues till recently. When I turn the tv on the sound come on and then the picture for a few seconds. It then shuts down and the power light blinks red 9 times. Thought it was the fan, but that runs for the short time that it is on. I have cleaned the dust out of the vent, but no help. And idea?