"Roberto" wrote ...
I have damaged my charger NC-72B after using it in a
220 V outlet (instead of 110 V). Is it possible to fix it?

Certainly.

But perhaps you meant to ask whether it would be less
expensive to fix it or to replace it. That is a very different
question.

It might be cost-effective if you could fix it yourself,
but not recommended without previous experience
fixing these kinds of circuits. They are frequently rather
tricky, and almost always dangerous. If you have to
ask the question, it may be a good indication that you
should not consider doing it yourself. OTOH, if you
have to take it to someone who charges commercial
rates, it may very likely be less expensive to just replace
it.