| Thanks Mike and Antony,
I thought that might be it (nowt in my owners manual and the wiring diagram in the online parts manual didn't give me much idea). I've only just replaced the rectifier with Antony's help. I was thinking about getting one of those cooler running Mosfet rectifiers if it goes again but puting the existing one in a cooler location is a good idea, likewise carrying a spare. I saw some pics of a paul Smart with a melted plastic tray online - not good!
Fingers crossed its the relay and I'll be up and running again. Thanks for your help - much appreciated.
Steve | 
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