i think i'll have to take the board out as i can't get the probes in there. will try shorting the fuse first though.

reading on the fuse is now 12ohm, i'm getting a continuity through it, i think (perhaps i'm still touching the casing or something), probably best if i take the pcb out tomorrow and do it properly.

cheers.
HUgh

edit, now only reading 2.9 - 3ohm ?

edit again...
shorting the fuse doesn't seem to do it