On Wed, Oct 28, 2015 at 10:02 AM, devin davison <lyokoboy0 at gmail.com> wrote: A standard MicroVAX 3800 should be an M7625 KA655 CPU board with at least one and up to four M7621 8MB and/or M7622 16MB MS650 memory boards in twelve slot BA213 chassis. A BA213 has mounting room for up to three full height 5.25-inch drives, either SDI RAxx drives or DSSI RFxx drives. I think DSSI RFxx drives would be standard for a MicroVAX 3800, in which case you should also have an M7769 KFQSA DSSI controller. If you have a M7769 KFQSA but the RFxx drives have been removed you can find RFxx drives on eBay, but you might be better off going with a Q-Bus SCSI controller and SCSI drives instead. You should likely also have an M7516 DELQA or M3127 DESQA Ethernet controller, and also an M7546 TQK50 controller and TK50 drive or M7559 TQK70 and TK70 drive. I have removed the TK50 and TK70 drives and controllers from my systems as they aren't worth the bother to me to try to get them working. To connect a terminal to the CPU you need an MMJ cable to connect to the console port on the M7625 KA655 CPU bulkhead panel. On the inside of the CPU bulkhead panel there should be a 3-cell NiCad battery pack. If the battery pack hasn't already been removed you want to do that before it leaks and corrodes things, if that hasn't already happened. There may be an M9060-YA load module in the slot 7-12 side of the BA213 chassis. The power supplies will shut down without a minimum 5 amp load on each of the two power supplies. If you had two M9060-YA load modules I think you should be able to remove all of the other boards from the chassis and install one M9060-YA load module in the left half and one in the right have and check if both power supplies come up OK.