Tony, Thanks for the reply... On Tue, 14 Nov 2006 13:58:10 +1100, Tony Smith wrote: > You need to put a load on the 12V rail, it won't start up otherwise. > > A lot of people put a 10W resistor across it so it draws a half amp or so. > A light bulb works too. Occasionally I'll just plug in a old hard drive. Sorry, I didn't make it clear that the rest of the PC is still there and connected to the PSU, so there is plenty of load on all the power lines. Cheers, Howard Winter St.Albans, England -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist