PDP-8/A Repairs Jan 2016 (retrotechnology.com)I obtained some PDP-8/A chassis and power parts in May 2015, examined and tested them and found some failures or issues. In Sept 2015 I acquired a second power regulator and verified its DC voltages
PDP-9 (Wikipedia)The PDP-9, the fourth of the five 18-bit minicomputers produced by Digital Equipment Corporation, was introduced in 1966.: P.10 A total of 445 PDP-9 systems were produced, of which 40 were the compact, low-cost PDP-9/L units.