Does anyone out there have a schematic for the model 280 power supply. I need a part number for diode D4 on the regulator board. Any and all help appreciated.. 73 - Phil N7UX N7UX - Whidbey Island, WA -- FAQ on WWW: http://www.contesting.com/FAQ/tentec Submissions: tentec@contesting.com Administrative requests: tentec-REQUEST@contesting.com Problems: owner-tentec@contesting.com