Hi Maarten,
I have attached a few images showing where it is in the circuit. It's in series with the horizontal scan coil. Originally, B&O used a Philips green/mustard cap rated at 125Vdc. I don't understand that when the waveform shows up to 475V pulses at line frequency, but perhaps the pulse toleration of these old capacitors was better (?).
As you see, I don't have a lot of space, and it is best if it could be a axial type (for rigidity). It can't be too tall either, as the rectifier tube base also takes up space. As an180nF is a bit rare. I can find a NOS 1500V rated 180nF as an alternative, but no other specifications.
By the way: The Xicon resistors that replaced the Rosenthals are shown in the last picture along with two 220k PR02 (Xicons out of stock). Should I rather have gone for special resistors that were rated for high voltages, such as the OSP10 from EBG Resistors? Those are rated for 1000V continously, while the Xicons are 500V and 1000V for short periods. (Data sheet:
https://www.mouser.dk/datasheet/2/35...35-1893446.pdf ). It seems a bit "off" having to contact a specialist company in order to obtain the the "right" resistors for the job.
