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Can you please get me the model number off the back of the TV?
Also, are there any blinking lights on the front of the set?
Thank you. I also need to know if any of the lights on the front of the set blink when the picture cuts out?
Additionally has ANY work at all ever been done on the TV?
The symptoms you're having point to a failed lamp in the TV. It will cause the exact problems you're having. The lamps typically last between 2-5 years tops and you should replace the lamp in your TV. The link below is where you can purchase the lamp for your set: