1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

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

Linear Mode
38-116XX code 125 oscillator problems
theblurrrr
Junior Member
**
Posts: 32
Threads: 16
Joined: Dec 2005
#1

12-01-2007, 01:34 AM
I try to learn little bits and pieces as I go along, but this one has me stumped.
In a nutshell, I the oscillator is not working and I am having difficulty understanding the schematic to troubleshoot and repair the problem. The 38-116 has this complex oscillator setup and although I have checked voltages and replaced all the conventional caps and substituted tubes, nothing works on any band, so I'm assuming the problem is common to all bands.

Has anyone ever discussed this oscillator and it's design? Do any of the Phorum gurus have any advice??

Thanks in advance
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
38-116XX code 125 oscillator problems - by theblurrrr - 12-01-2007, 01:34 AM
[No subject] - by Ron Ramirez - 12-02-2007, 12:56 AM
Got it going!! - by theblurrrr - 12-02-2007, 02:12 AM
[No subject] - by Ron Ramirez - 12-02-2007, 10:04 AM
IF frequency - by theblurrrr - 12-02-2007, 02:48 PM
[No subject] - by Tim Tress - 12-10-2007, 09:08 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 42-345 Restoration/Repair
Hi OSanders, Look carefully at the band switch. Turn it slowly and "wiggle" it around the desired band. ...MrFixr55 — 12:33 AM
5U4 vs 5Z4 tubes
I think that RCA and GE introduced metal tubes in the USA in 1936.  I don't know if they were being made by RCA, GE or b...MrFixr55 — 11:20 PM
Philco 42-345 Restoration/Repair
Vlad95, Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM
5U4 vs 5Z4 tubes
A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM
Philco 42-345 Restoration/Repair
Thanks Rod, "When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM
Philco 42-345 Restoration/Repair
RodB :beerchug:Vlad95 — 10:22 AM
Philco 42-345 Restoration/Repair
Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM
5U4 vs 5Z4 tubes
Well this is a Hallicrafters SX/9 circa 1936. No real issues so far although I dodged a real bullet with a cap that was...bridkarl — 07:59 AM
5U4 vs 5Z4 tubes
The pinout is the same but the 5U4 has a 3 amp filament, verses 2 amps or less on the 5Z4. I think that the pinout of a ...Arran — 12:04 AM
Philco 42-345 Restoration/Repair
By the way. osanders0311 Take a look here: Dial cord stringing Guides May be here you can fount correct string settin...Vlad95 — 11:15 PM

[-]
Who's Online
There are currently 1280 online users. [Complete List]
» 1 Member(s) | 1279 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration