If you have all the power supplies at the correct voltages and the idle current adjusted, the buzzing coming with all sources I would suspect the power supply or anything before the preamps
Collecting Vintage B&O is not a hobby, its a lifestyle.
Congrats Peter, time and time again I stare myself blind with failures like this, good job finding it
Just at this point on my own project, waiting for 3 off new caps to be delivered......I feel compelled to say that loading up one capacitor terminal with no less than eleven connections is a bit excessive.....little wonder one connection was weak.
in case it still is a mystery: hv is the red-white twisted wire at the bank of 4 wires and r is the red wire in the bank of 4 wires on the center right hd side.