Hi Ed, I did not download it (17M) but perhaps the first file here http://www.classiccmp.org/bitsavers/pdf/dec/pdp11/1105/ has a drawing of the PSU. - Henk, PA8PDP. -----Original Message----- From: cctalk-bounces at classiccmp.org To: cctech at classiccmp.org Sent: 15-7-2005 18:51 Subject: PSU schematic of the PDP-11/05 (11/10) needed Hi All, I have a PDP-11/05 (11/10) in a 5.25" box version which I'm putting together. It's going to be equipped with 8Kb of core and a RX02 floppy interface. When powering up, led's come on, but there is not much action to get. Look like the -15V of the PSU is not working properly. The PSU is a different one compared to the well known bricks used in BA11 boxes. This one delivers +5V, +15V and -15V and is labelled 5409728. Anybody have a schematic of this PSU by any chance? Thanks, Ed