Thanks for that Gadge,
I had a look at the video on Caswells site, the 5 step process is quite involved, requiring tank heater, filter pump and a kit of chemicals and more...
Where my cleaner is at: new board and repair parts for the damaged board are on their way.
Why it blew the fuse could have been my fault, I had the tank half full of water, around 4lts plus the basket. The fuse blew when I removed the basket.
I have learned that with out a load in the tank the output current increases making the heat sink hotter.
Should have had the tank full of water.
Does this ring true for anyone?