[morzh]

Today I decided to take it on the condensor cans. I picked the first one, with the caps 13-16.
In fact, in the sch and on the chassis drawing the can has 4 caps; in reality it has 5 caps as the tone control switch uses 3 of them, and not 2 and one empty position, like the sch shows.

Here's the can in city.
   

I took the drill and drilled out the rivets.
   

The desoldered it.

Then I set my sodering iron tip temerature to just ove 800F.
   

The tin is rather thin, and so I kept heating the bead and shaking the solder off.

   

Then I pryed the lid and with a little help of soldering iron it came off fairly easily.

   

Then I heated the eyelets and shook out the solder to free the wires.

   

Also the solder bead on the side. I did not know whether it held the ground wire. So I desoldered it just in case.

   

With a bit of prying, some sort of cover came off, and then the innards.



   
   
   
   

The other side of the cover had some numbers on it; I wonder if it is the can P/N.
Would like to finsd out to figure the 3rd Tone ctl cap's value. Though I am sure it is small, 300-500pF, and not too important.

   

Some info on AK is here. But I need more.
http://www.atwaterkent.info/TechData/Ima...32_018.gif
http://www.atwaterkent.info/TechData/Ima...32_019.gif

It says the block number is 21250.
The Gernsback book gives the values of 21250 (with the exact confuguration as mine) as 500pF - 3nF - 7nF. The values are a tad different from what sch shows. But I will trust the description in these books, seem legit.

https://worldradiohistory.com/BOOKSHELF-...Supl-6.pdf