ECHOPLEX EP-2 Schematic, please

[Олег Горшков]

I got ECHOPLEX serial number 9631 by chance. Hobbyists tried to repair it. I didn't find the diagram. It looks like EP-2. It has three tubes and the most unusual thing is four transistors.
If anyone can share the diagram I would be grateful.

 

[Олег Горшков]

Or maybe EP-3

 

[Evertide]

Its a 3...

One of the latest , hope it's in...