Hi there, I'm working on what I am led to believe is a PDP-11/73 (but it doesn't look like one). It *was* working last week, but one of the leads had dropped off the console socket on the back. On resoldering, it worked perfectly. Last night, when I opened it to fit the RXV21 another lead dropped of (RXD this time), so again, I resoldered it. I don't think this has much to do with the problem. When I power the machine up, the 2nd-from-right status LED lights up. front panel comes on for a moment, then goes back out. The green LED on the KDJ-11A never comes on (but I'm not sure that it ever did). All the cards are firmly seated. Unfortunately I don't have a list of all the cards fitted to hand. | M8192 | Serial? | | full width memory card | | RL02 Controller | | ST506 | Console/ROM | | M8029 | | Can't remember exactly, or quite what the cards are (some seem to be third party). One - does this seem to be a sane layout of cards (modulo uncertainty on my part); and Two - What would cause my SLU Error, and how should I proceed? Thanks in advance, Gordon Pearce