Sorry but probably not. As a transformer degrades the insulation breaks down and allows leakage current. However, by the time the current gets high enough to see on your home feed, it blows. It doesn't take a very large fault in a transformer to runaway and blow.
The noise you see at home is more likely the result of unbalanced loads, adding and removing loads, and other system disturbances. The good news is that often the amount of noise on your system is exaggerated.
Certainly it can't hurt to have a new transformer.
Jerry