🚀 go-pugleaf

I just purchased an antique Zenith 12HO90, chassis #11C21, for the purpose
of restoration to original condition.  The problem is, on further inspection
of the chassis, it seems that the thing was rewired with a transistor amp 
(removed before I got to it) straight into the phono.  The loop antenna 
is missing, and there's an empty socket on the main chassis (the phono 
I think, but why so many pins?)   All the tubes are present and accounted
for, so it's not a tube socket.  

What I really need are the schematics, and better yet, a service manual 
for this puppy.  Seeing as it was the top-of-the-line console in the 
late 40's (my date estimate), one would think there would be service manual
other than the old Sam's or Ryder's for it.   Any help with this would be 
greatly appreciated.  

Please email me your responses, as I don't get to the nn often.

Thanks in advance
John Carmack
jmc@engr.uark.edu