How do you tell by the schematic? You can't by the one you are using. Like Marv I first thought you were talking about a "gimmick" but these are usually indicated on schematic. I finally woke up after reading your post over, over, etc. You indicated an ohms reading with cap value. I attributed that to whatever...you know. I never thought the caps were ceramic as you addressed them as "chalky." That's where pictures should have been introduced. I pulled SAMS 128-12 and checked the parts list and schematic. The SAMS data is as I stated about the combo units. The one on this site is apparently wrong (now) as you have confirmed about the 470K. I had thought, little disappointed, there should be dotted lines around the combo units on the schematic in SAMS at least. So not knowing when and if that is correct assumption won't go there. I will send you a copy of SAMS later in the day. Be sure you have posted an email. Anyone else wanting a copy let me know.
Bill
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::Bob, you have some multi units there. For instance, C11 and R13 have same housing. One lead goes to pin 1 or 7, doesn't matter, of 6AQ5. The other lead goes to Pin 7 of the 6AT6. C11 is coupling cap. The lead wound around is just the ground lead for R13. Look at schematic. I'm not sure you need to replace it (C11/R13). I would take some measurements. If one and/or both are bad, use individual parts and follow the schematic. Likewise the other dual parts: C2/R2, C7A/C7B/R8, C9/R11, and C10/R12. Good luck.
::Bill
:::Bob
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:::::Do the schematic drawings for the negative filter cap ends denote anything different with it's forked like end to the ground symbol?
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::::Bob, that's one of the symbols used for wet electrolytics. The individual values for the lugs are differentiated by the small triangle, square, and part circle symbols. These smaller symbols will be near the lugs as well on the outside with value and voltage. I don't know if that capacitor symbol was ever adopted by EIA but some did use it...yours makes point.
::::Bill
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