Mains fuse keeps blowing

[dvdlawson13]

The mains fuse on my 30H keeps blowing, does anyone out there have any suggestions why this is happening?
Thanks in advance for your help

[majikmojo]

i assume you have checked line voltage going to the amp and it is correct?

[maw4neu]

I had a very similar problem when my rectifier valve was on its last legs . .
If you have a spare, swap it over and see if the problem is still there . . My fuse problem went away. Yippee ! !
Hope this helps ! ! ! If not take it straight to a technician . .