.. heys guys...
okay the A12 and 600 PSU brick supplies 25Watts and the OLD 500 provides 35 (not a lot more but enough)
I converted a cheap £1.50 90watt baby atx psu (from computer fair) into a 500 psu brick with a 80mm fan ontop for re-housing an A12.
Instead of using a standard 5pin connector to the miggy it was modded to a 12 pin connector to allow for independent power / reset, -12v and two sets of +5,+12 & gnd
got some really cheap cable sleaving from
www.valuelist.co.uk and volia! a small effecient 90watt PSU for the amiga with a psu reset too
anyone need specs on how to make just let me know.