I recently picked up two of these Brandenburg Gamma Series power supplies. A 628-10 (10kV at 10mA) and a 728-10 (20kV at 5mA).
The 628-10 here produced no output but the 728-10 did but has some minor issues. The output HV connector plug was missing, the earth HV return post was broken and was generally a bit grubby.
So i opted to cannibalise the non working 628-10 for it's internal Brandenburg Type 37 HV connectors and a couple of other minor components and scrap the rest.
I expect to be testing and later selling on the 728-10 unit.
I expect to be testing and later selling on the 728-10 unit.