Thank you Neale for your replies. The Toroidal transformer and PCB are the problem. I have disconnected the x4 stepper drivers and changed the fuse. Blown fuse. I disconnected the PCB from the Transformer and changed the fuse. No blown fuse. I assume now it is the toroidal transformer.

The toroidal transformer has this sticker on it.Click image for larger version.  Name: 20220221_163020[1].jpg  Views: 262  Size: 126.9 KB  ID: 30892

Click image for larger version.  Name: 20220218_180734[2].jpg  Views: 259  Size: 307.8 KB  ID: 30893
Click image for larger version.  Name: 20220221_110021.jpg  Views: 241  Size: 212.8 KB  ID: 30894

So I think I need to source a Toroidal Transformer and all should be well. I have sent messages to both Airlink and Rapid. The transformer is 500w 58v, 48v and 12v. If I have to power the 12v separately I can. I am assuming the 12v powered the breakout board as the breakout board worked with the transformer attached and it was dead with the transformer detached.

If anyone has any more suggestions for where I can buy such a thing that would be great.

Kev