Blown fuse on Macintosh Classic II: Causes and potential other damage

[Vacaneu]

I have attached 2 images of the analog board, one marking cracked RIFA caps and the removed fuse.

My analog knowledge is poor, so I'd like to know what the potential causes would be, and what other damage may be inflicted.
I will recap the board once I have time so I do hope it's the RIFAs I'm suspecting. Please help point me in the right direction.

 

[Vacaneu]

*This is a 240 volt board

 

[SpocksBeer]

Well, a fuse that pops straight away is usually indicative of a fault on the primary side (240v) of the power supply. The safety caps (the white ones you've identified as RIFAs) do sit on that side, so it's possible that's the cause. I forget which one, the X or the Y, but one does fail short.

Could also be a shorted inductor, or winding in the main transformer which would be a bit more terminal. I'd replace the safety caps first and see how that goes.