PDP-11/45: Power fixes and CPU debug

Connected up the aforementioned red wire hack to the new power harness, and verified +5V to slots 10 through 15. Console is no longer all address and data lights on, but basic console load address / examine / deposit operations are still not working. A random assortment of address lines seem stuck, different on each power cycle. About the only thing that reliably functions from the console is loading the two highest address bits from the switches immediately after a reset. Pulled the floating point unit, unjumpered the DD11 expansion backplane, and removed all peripherals except the M792 diode ROM; same (broken) behavior...

Scoped all the DC voltages, and did not notice any glitches. Pulled the H742s for some bench work: verified AC LO and DC LO signaling on both units, replaced a broken Mate-n-Lok connector on one of the units, blew out dust from all the 5V regulators and replaced their indicator bulbs with modern equivalent (CM7381). Sourced and put on order a modern equivalent (OL-6003BP) for the indicator bulbs on the -15V regulators.

Next steps will be to verify various Unibus signals on the backplane, then maybe play some swap games with CPU card spares to see if I can get closer to a working console as a starting point. All I have time for this weekend, though; sorry nothing new to see so no new pictures this time!