TVs are very dangerous inside.
Firstly, they're actually almost a complete vacuum inside. If you damage the glass slightly, the tube will implode at very high speed, and bounce back outwards on itself, effectively exploding. I've seen this happen and it's pretty cool, but very VERY dangerous.
Secondly, almost all CRTs have triplers on the back, which can have up to 30,000 watts of power stored in them, even 6 months after the set was last connected to the mains.
Thirdly, you don't really have any chance of fixing it.
What make/model is it? If it's a Bang & Olufsen, it's almost certainly repairable, if it's a high end Loewe, then quite possibly, if it's anything else, then it's a definite no-no.