SWR Workingman's 12" Fuse Issue

[wulf]

A friend of mine recently picked up a SWR Workingman's 12" combo from eBay for a very good price. I vaguely envied him as the only piece of gear I regret not having any more was my WM12.

However, I don't envy the fact that, after a few days, he found the slow-blow fuse at the back went, as did the one he replaced it with. He hasn't got Internet access at the moment because that broke as well (another thing I don't envy him for! poor bloke!) so I said I'd ask around.

Has anyone got experience of problems and solutions round this combo and fuses? Also suggestions of SWR amp experts in London / Kent would be great.

Thanks,

Wulf