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

Threaded Mode
39/44 tube
dirkbuddy
Junior Member
**
Posts: 39
Threads: 8
Joined: Feb 2014
City: Medicine Hat, Alberta canada
#1

06-02-2014, 08:01 PM
I'm in the process of restoring a philco 71H, recapped it and changed out all resistors that were out of tolerance. after initial power up i notice considerable hum from frequency ranges 850 down to very bottom of dial, after testing the tubes i have 2 - 39/44 ... both test very good.....however 1 of these tubes glow at the top (made by raytheon) and the other (RCA) does not? i have a stark tester and checked for shorts on both tubes and there was not any. does anyone know if all 39/44 tubes should glow? just wondering if maybe my stark tester is not picking up a maybe dud tube here.....??
Find
gregb
Senior Member
****
Posts: 599
Threads: 24
Joined: Jan 2014
City: Edmonton AB CA
#2

06-02-2014, 08:04 PM
Some tubes have the cathode pinched closed at the top so you cannot see the filament glowing where as others don't and you can see the filament, it makes no difference.

Gregb
(This post was last modified: 06-02-2014, 11:07 PM by gregb.)
Find
dirkbuddy
Junior Member
**
Posts: 39
Threads: 8
Joined: Feb 2014
City: Medicine Hat, Alberta canada
#3

06-02-2014, 08:20 PM
ok thanks fellow Albertan!
Find
gregb
Senior Member
****
Posts: 599
Threads: 24
Joined: Jan 2014
City: Edmonton AB CA
#4

06-02-2014, 09:10 PM
No problem Dirk, anytime.

Gregb
Find
« Next Oldest | Next Newest »
Thread Closed




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Road Trip for a Philco 46-480
Good morning, folks! I’ve finished the cabinet and the electrical restoration, and have detailed those in their respecti...jrblasde — 10:56 AM
Studebaker/Philco AC-2687 car radio
Arran, Thanks for checking you manuals. I appreciate that. Let me know what you find. PhilPdouglaski — 08:46 AM
Studebaker/Philco AC-2687 car radio
I have some car radio service manuals, Riders I think (not to be confused with the big blue binders), so I may see if on...Arran — 01:20 AM
Philco model 40-100
Greetings; Here is an update, I found a listing on fleabay for a similar chassis to yours, and it has a photo of what...Arran — 12:58 AM
Philco model 40-100
Greetings; I think I may have found a clue as to what is missing, from a search I made, there is a rear view of the c...Arran — 12:12 AM
Philco model 40-100
I recently acquired a Philco model 40-100 farm (battery) radio. The radio was in very good condition except the red on f...mhamby — 05:59 PM
Studebaker/Philco AC-2687 car radio
Hello, Richard the radio is an AC-2687 Studebaker model. The Philco model is S -5323 and the chassis p/n is S-5523Pdouglaski — 11:52 AM
48-482 rear panel help
The 48-482 is an AC only set as well, featuring a power transformer. While the transformer shouldn’t get “hot”, it is ye...jrblasde — 11:12 AM
Studebaker/Philco AC-2687 car radio
I gave a Chrysler/MoPar car radio from 1954, it was made by Philco, and it uses two chassis, one has the power supply an...Arran — 11:06 AM
48-482 rear panel help
Hello keithchip. You could make a hardboard back for the set, but make sure you provide plenty of ventilation holes in ...GarySP — 11:04 AM

[-]
Who's Online
There are currently 2322 online users. [Complete List]
» 2 Member(s) | 2320 Guest(s)
AvatarAvatar

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