06-23-2019, 05:32 PM
"You Big Dummy"
Doing some research, I noticed that the Model 19 and 89 sets, which also use a 260 kc IF, use a padder capacitor (04000-S) which has more "leaves" and therefore requires no mica cap in parallel with it.
So, I decided to just replace the original padder with an 04000-S since I have a (very) small stash of trimmer caps salvaged from junk Philco sets.
And when I went to replace the padder, guess what I found...
I had forgotten to install resistor (11), 51K, which is also mounted in parallel with padder cap (10).
Reattaching a speaker and a test antenna, the set came to life - with the tube shield in place - and is now picking up two or three stations weakly. Best of all - no more popping or buzzing.
It needs a complete alignment, but it is now working.
Thanks Ed and Rob for your help with this one.
Doing some research, I noticed that the Model 19 and 89 sets, which also use a 260 kc IF, use a padder capacitor (04000-S) which has more "leaves" and therefore requires no mica cap in parallel with it.
So, I decided to just replace the original padder with an 04000-S since I have a (very) small stash of trimmer caps salvaged from junk Philco sets.
And when I went to replace the padder, guess what I found...
I had forgotten to install resistor (11), 51K, which is also mounted in parallel with padder cap (10).
Reattaching a speaker and a test antenna, the set came to life - with the tube shield in place - and is now picking up two or three stations weakly. Best of all - no more popping or buzzing.
It needs a complete alignment, but it is now working.
Thanks Ed and Rob for your help with this one.
--
Ron Ramirez
Ferdinand IN
