Replacing Bel Canto S300 blown ASC200 module

So I have lost left channel on my S300 and after reading up on the amp a little and realizing that Bel Canto seems to have just wrapped two ASC200 modules in a nice case, maybe I should just order a new module for $129 and replace it myself.
A couple questions for smarter people than I. First, the ASC200 (at parts-express) says it is rated at 200W @4ohms, but the S300 says it is rated at 300WPC @4ohms. How can this be different? Second, looking at the pictures of the inside of the amp, this looks like an easy plug and play--is it so simple?
I know nothing about the Bel Canto, or Icepower ASC200, so take this advice for what it is. I had the Ice Edge 1200AS2 modules.
Looking at the spec sheet, the ASC200 using 230vac/50Hz @10% THD+N is rated at 290W - so it's close to the suggested 300W.
I would try removing the bad ASC200 module from the case first. If you see no issues doing this, then 'yes' it can be so simple. If you feel there are issues removing it beyond your capabilities, then it isn't so simple.
I would also consider ordering 2 modules at the same time and installing both new modules instead of just replacing the broken module. Use the good/old one as a backup. If you decide to order 2 modules at the same time, remove both modules first to make sure you don't encounter any unknown issues before ordering the modules. Typically, these modules for this type of installation really are very simple plug and play.
Yes stock older icepower in that TTBOMK.  Make sure you get the right Icepower board.

If you can’t do it yourself worth a call to Bel Canto to at least determine if repair cost worth it. They did work on one of my ref1000m Class D amps several years back for reasonable cost and turnaround in just a few weeks. Replaced the proprietary input stage in that. Came back good as new.
Thanks Golfnutz--you know how it is, when something looks so simple you think you must be missing something.