No picture and buttons don't work

My Sony Trinitrom (KV-27FS13) has been working beautifully for 6+ years. Today I come home and the TV turns on, but displays "no signal" with static. I try to change the TV/Video input to watch my Directv, and the button does not work on the remote and neither do any of the buttons on the TV except the power button. Any ideas???

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