I had a fuse once break on me, and consequently received a face full of hot air. Replaced the fuse, and counted myself lucky!
There should be a pictoria somewhere on this site - or a link to one, as to how to replace a mono valve. It's pretty simple - just make sure you don't let the any parts fall off the stem, so you know how to put it back in.

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D