TV capacitor 54j 6kv swc
That doesn't look broken. 

The white stuff is glue. 

That part is either a ceramic capacitor (which would crumble if it were broken, but has no liquids inside) or it is a transient voltage suppressor (which also has no liquids, and would either burn or shatter if it were bad.) So, I don't think this part is the problem.

If that is a capacitor, then it would be rated 54 picofarads (54j) and for use at up to 6000 volts (6kV.)