[TV MAN]

Again, don't assume it is bad. Sleeving can be accomplished with shrink wrap. Some isolation transformers have voltage settings that you can kinda use like a variac, and start out with lower voltages. Some do not. +1 on the HV winding usually being the one that goes bad, due to shorted filter caps, tube, etc. But, don't assume it's bad my looks. It could be perfectly fine. Try to keep your colors or somehow mark the leads so you know what goes to what.