I'd say it's not a failure because of usage, but because of age. Maybe a faulty, leaky capacitor slow to charge somewhere? A common failure with CRT is a delayed picture at boot: the screen takes longer and longer to start, several minutes, then fails to start at all. Your problem, while different, may be related. In any case this is not something you can fix yourself unless you know what you are doing. You are better off calling the TV repair man who has tools to check stuff like this.
Don't even try to open it. Even unplugged, CRTs store some deadly current. And it's not an hyperbole.