Meck XB-702 restoration

[bandersen]

It turns out my width issues were due to 1/2 of a 12SN7 going dead. Absolutely 0 emissions. I figure the cathode must be open.

Next up, I pulled the tuner for an overhaul. Now, I can see that it is a Sarkes Tarkian V5941 made in Indiana. It does not match the service info and the output wire is spliced into the set.

That makes me wonder if it's a replacement?
Maybe at the dealer when they replaced the HV caps?

It could also very well be that the mixer tube really should be a 6AU6 and not as 6AG5 as shown in the tube layout?

I tried looking up that tuner part# but came up empty.