i evaluated the first 11/44's for use in a Tektronix product, even then we had some power supply failures. From my foggy memory, you may want to check, the power supply connector for corrosion, then check the status of the caps. Its not going to be easy to test the big ones if you don't have the equipment. Unfortunately i lost the complete set of schematics in a fire. Still think i have a CIS board which may want to get rid of -pete -----Original Message----- From: will kranz [mailto:will_kranz@SoftHome.net] Sent: Tuesday, November 04, 2003 8:44 AM To: cctech(a)classiccmp.org Subject: PDP-11/44 want list John On Tue Oct 8 20:11:58 2002, you posted about your 11/44. I was searching for help with the H7140 power supply when I came across your post. I recently tried to power up a system I got a couple years ago, and have a flashing 'DC On' indicator. I don't know how serious this is, or if I might be able to repair/adjust it with some guidance. Suggestions? I have no documentation on the power supply. Thanks.