Nothing visible there, a good sign. Blown fuses are caused by short circuits, so it could be a shorted diode in the power supply circuit. It could also be a shorted capacitor or less likely a shorted primary or secondary winding in the power transformer. I would lean toward the diode theory because of the way that it happened with a sudden large current draw on the power supply.
You will have to find what component is causing the short and replace it to get the power supply up and running and then go from there. Hopefully all else is fine.
You will have to find what component is causing the short and replace it to get the power supply up and running and then go from there. Hopefully all else is fine.