Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Poss. OSC Problems Philco 34
#1

Hi All;
Before I start to build a Breadboard Oscillator circuit.. I though I would ask --
What steps would Everyone suggest I take in finding and or eliminating where the problem might be ??
By having a checklist I can go thru it and "say" I've done that or I need to do that, or I didn't think of that..
I just want to make sure I have done or tried everything that would logically be done to find the problem..
I have sound going thru the Audio stages and IF going thru the IF stages, and get the output on the speaker from it.. I can pass IF (460KC) thru from the antenna.. And some but not regularly I could get a station to come in.. But, not at present.. When looking at the Oscillator I can get a variable frequency, not necessary the correct one.. But, it did oscillate..
My next step would be to build the front end: Antenna to RF to Oscillator to Mixer circuit on a seperate wooden board.. And subb it in..
What suggestions does everyone have ???
THANK YOU Marty


Messages In This Thread
Poss. OSC Problems Philco 34 - by marty - 08-16-2013, 12:08 AM
RE: Poss. OSC Problems Philco 34 - by BrendaAnnD - 08-16-2013, 02:10 AM
RE: Poss. OSC Problems Philco 34 - by marty - 08-16-2013, 10:16 AM
RE: Poss. OSC Problems Philco 34 - by Arran - 08-16-2013, 07:42 PM
RE: Poss. OSC Problems Philco 34 - by marty - 08-16-2013, 08:37 PM
RE: Poss. OSC Problems Philco 34 - by marty - 08-17-2013, 09:43 PM
RE: Poss. OSC Problems Philco 34 - by marty - 08-17-2013, 10:23 PM
RE: Poss. OSC Problems Philco 34 - by marty - 08-19-2013, 02:48 PM
RE: Poss. OSC Problems Philco 34 - by marty - 08-19-2013, 04:13 PM
RE: Poss. OSC Problems Philco 34 - by marty - 08-26-2013, 01:38 PM
RE: Poss. OSC Problems Philco 34 - by marty - 08-26-2013, 03:12 PM
RE: Poss. OSC Problems Philco 34 - by marty - 08-31-2013, 07:02 PM
RE: Poss. OSC Problems Philco 34 - by marty - 09-02-2013, 10:34 AM
RE: Poss. OSC Problems Philco 34 - by marty - 09-02-2013, 02:28 PM
RE: Poss. OSC Problems Philco 34 - by marty - 09-02-2013, 09:34 PM



Users browsing this thread:
[-]
Recent Posts
Philco Model 38-7: what caps & resistors do fail typically?
Since you stated earlier, you have a console 38-7XX.  They also had a 38-7T (table), and 38-7CS (chairside).  A very nic...GarySP — 01:18 PM
Part numbers to model cross
That I wouldn't know, but sometimes the radio document itself shows one, same as the capacitor cans' etc pinouts.morzh — 12:46 PM
Part numbers to model cross
Thank you morzh, that is exactly what I was looking for. Now , is there some where that shows pinouts for Philco power ...Jim Dutridge — 11:37 AM
Restoration of the Canadian General Electric A-87
Thanks for your help Michael. In fact, this video is only an intermediate result. Later I had to apply another tinting l...RadioSvit — 09:01 AM
Restoration of the Canadian General Electric A-87
Great job on the cabinet. PS. In the US notation, "kenotron" refers to specific type of tubes; we call re...morzh — 08:24 AM
Part numbers to model cross
This document has at least some tables of models and parts used. Example: Choke 32-7572, used in 604 radio. Search f...morzh — 08:19 AM
Restoration of the Canadian General Electric A-87
I also checked all the radio tubes on my Hickok 530 tube tester. The 5Z3 kenotron turned out to be faulty, all the other...RadioSvit — 08:02 AM
Restoration of the Canadian General Electric A-87
Well... While the varnish is drying up, I started repairing the chassis... Of course I started by replacing the pa...RadioSvit — 07:12 AM
Philco Model 38-7: what caps & resistors do fail typically?
Hello Martin, Welcome aboard our little community what great Model 38-7 Sincerely Richardradiorich — 12:30 AM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum Martin. I count about 9 paper caps, the 3 electrolytic caps and 2-Y2 safety caps to replace th...RodB — 09:44 PM

[-]
Who's Online
There are currently no members online.

>