Also.... If you decide the converter is toast.
Progressive Dynamics makes some rather nice converters..
The 9200 line is "Stand alone" like my 9180 with wizard (Also by them) And these converters are, in my not very humble opinion, the best.. NOTE: there are several models that are "THE BEST" I happen to like these better for personal reasons but even with out that, being totally objective they are among the best (Several where I could not rank any one better than the other).
I believe the 4600 line is electronically the same but PHYSICALLY designed to drop into the space left when you remove the electronics from an integrated panel.
Randy at Best Converters..... your friend if you need a new converter.