Rick, try unplugging it from the outlet and wait 5 minutes. My old Sony CRT did this sometimes. I'd hear the "bong" as the degausser would fire up, but the picture would remain nonexistant.

Unplugging it reset the circuit board, or something-or-other in there, and it came back to life like a champ after a brief wait.

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"Nothin' up my sleeve. . ." --Bullwinkle J. Moose