04-09-2014, 01:10 AM
Steve, you are correct. I combined the 70,000 resistor with the .5 meg (470,000) resistor on the 8035-D condenser. I corrected it to put it on the same condenser as original and per the schematic. I have a Philco 42 but using the RCA-42 and this time I allowed it to properly warm up. I am re-checked voltage using my volt meter (yes, Madmurdok I do have a cheap volt meter exactly as you stated). this time the 42 is reading H & H both 0, k G3 = 0, G1=3.5, G2=272, P=265. To Madmurdok, you'll notice the book is purchased off ebay and I will read it. I want to understand this - I'd like to make a hobby of this. 40's and 50's radios were a lot easier than the Model 60 but this is REAL radio to me and will open up a whole new world if I can get my feet on the ground (with one hand in my pocket). Steve, I check voltages before I connect anything now - thank you.
real mystery to me is I can't inject a signal even at 42. I can connect to a modern AM radio and find the 400hz tone like crazy. my speaker is silent beyond a low level hum and when I touch something I shouldn't and it screeches. after putting the .022 in series (validating with modern am radio) I get nothing at 42 or 75. From your description is this the most basic audio test. Meanwhile I'm examining the schematic and see if a resistor is wrong. I've been working on the cabinet so this will be my show piece if it can get working again. thanks for all your help! Rich
real mystery to me is I can't inject a signal even at 42. I can connect to a modern AM radio and find the 400hz tone like crazy. my speaker is silent beyond a low level hum and when I touch something I shouldn't and it screeches. after putting the .022 in series (validating with modern am radio) I get nothing at 42 or 75. From your description is this the most basic audio test. Meanwhile I'm examining the schematic and see if a resistor is wrong. I've been working on the cabinet so this will be my show piece if it can get working again. thanks for all your help! Rich