09-21-2016, 07:29 AM
Thanks, guys! On this particular set, cap 24 has only 3 sections, with the detector amp plate decoupling section added to cap 30, which has 3 sections rather than the 2 on the diagram. Just mentioning it as an observation; I'm sure this seemingly undocumented change is already known to exist.
I have a model 70, and used it to test my 90 after the recap, and now I know which speaker to look for. I think the dead speaker that came with the set looked just like the tinny one in the 20 I used to own. There was an open on the RF plate due to the RF primary being open, so I temped in RC coupling. Even so, without an antenna this set pulled in most of the locals like a champ. And I like it because it has a discrete oscillator rather than the troublesome autodyne circuits found so frequently on Philco sets of that vintage.
I have a model 70, and used it to test my 90 after the recap, and now I know which speaker to look for. I think the dead speaker that came with the set looked just like the tinny one in the 20 I used to own. There was an open on the RF plate due to the RF primary being open, so I temped in RC coupling. Even so, without an antenna this set pulled in most of the locals like a champ. And I like it because it has a discrete oscillator rather than the troublesome autodyne circuits found so frequently on Philco sets of that vintage.
