Excellent news! Hooray!
But it's just a bit worrying that it has failed now, so shortly after you replaced the coil. As it's a solid state semiconductor device, it shouldn't really fail unless something goes wrong. Generally speaking, overheating is about the only thing that can kill a semiconductor.
I suggest you check that there are no short circuits anywhere around the coil, and also that the coil primary DC-resistance (over the + and - connectors) is roughly correct. The primary DC resistance should be about 0.85 Ohm, secondary 9.5 kOhm.
The other thing to check is the module's fixing to the aluminum plate and whether it was fitted with heat conductive paste. Was it removed and refitted when the coil was replaced?
It should be possible to check the surface temperature of the module with a wet/moistened finger (to avoid being burnt): It should only be moderately warm. Otherwise it is too hot. If it is hot, it will be good to check the temperature of the cooling plate - if that is much colder, then the module isn't fitted correctly and cannot dissipate the heat that it's producing.
But if all that is okay, then it has probably just failed from age - I have seen an example of an IC that suddently just gave up and melted down. It was sitting in an enormous 1969 computer system!
Best wishes,
Anders