Hi John,
Go to the files section, I up loaded whatever schematics are available for the Mk V/VIB a few years ago. The pictorial for the Nixie board is labeled ml_vib_c. You should download all the schematic files as Yahoo will be deleting everything by the end of the year.
BTW, I also have a schematic of the MK VI/VIB RF front end if your interested. I had a Mk VIB whose front end got damaged and none of the well respected techs I spoke to wouldn't/couldn't repair it. As SAE would purchase complete frone ends from Gorler in Germany the schematics only should a box marked "2 fet, 4 gang tuner".? A tech savvy fellow active on the Radio Museum site helped walk me through the repair with the first step being tracing the circuitry of the front end and drawing a schematic along with proper voltages from a properly working Mk VI/B. The story goes on further but I'll leave it at that for now.
BTW, do you get any drift with your tuner after first turning it on??
John
