<http://www.ko4bb.com/cgi-bin/manuals.pl?dir=09%29_Misc_Test_Equipment/Solartron> Hard copy from Telford Electronics in the UK (a photocopy, but not quite as up to date as the scan on Didier's web site). Visit also <www.perdrix.co.uk> for a blog on repairing one of these. Regards, David Partridge