A possible cause for no-power condition on Super Nintendo / Super Famicom / 32X consoles. T1 is a surface-mount choke (filter) that sometimes goes open circuit.
If your SNES 1.5A fuse tests good but you still have no power to the input leg of the regulator, check continuity across T1.
2020-07: Original gullwing style parts are no longer readily available. These replacement parts have surface mount pads, but can still be soldered to the stock pads.