Dolphin Cleaner Blowing Fuses

by grant
(grafton, nsw)

I have a Dolphin pool cleaner and was going fine until one day i turned it on to start its daily clean and there was no power to it. It only took me a second to realize it blew the glass fuse in the Dolphin's power supply box. I got another fuse and it blew it instantly, so I tried again and same result. The Dolphin would be about 5 years old and hasn't done a great deal of work, what do you think and recommend?

Regards
Grant

ADMIN REPLY: My first thought was a broken wire in the cable creating a dead short. Check the cable.