Update on my build. I managed to swap out the transformer and get power to it. Yay! And then there was the dreaded burning smell and it appears I still have a build error as I have melted some resistors see photo. Please help.
The output transformer will have nothing to do with getting "power" to the module. From the results its something else.
I assume the opamps are built by you? These smoked 6 R's are power damping resistors. 2 supply the 1st discrete opamp, 2 supply the 2nd discrete opamp and 2 supply all of the discrete followers. Burning all 6 means that you have a major error on each of the above locations.
The first rule of thumb is....you should never try to test a fresh module build with fresh opamp builds. In this situation you immediately thought it was the module but the smoking of the 10Ω power damping R's tells me it's the opamps. Here we also have the 10Ω's for the discrete followers smoked so I would look for incorrectly placed transistors there which is Q1-Q6. I'm not saying there can't be trouble on the module itself though.
PR1 and PR4 are for A1
PR3 and PR5 are for A2
PR2 and PR6 are for the discrete followers Q1-Q6
As for the gar2520 issues, you should visit that support thread.
Once you replace the 10Ω R's and get the Q1-Q6 parts sorted, you can power the module with
no opamps to make sure the followers don't smoke their R's. Then use good known to be working opamps from another module to test this build.