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
Nothing but slight hum from 37-620
Radioroslyn
Phorum Expert
*****
Posts: 7,300
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
#5

01-09-2011, 06:45 AM
With the signal generator adjust it so you have a modulated signal at full output at 470KC or for you modern guys 470KHZ. Take the output from the generator though a small cap, size doesn't matter here anything from 100pf to .1@ 600v is fine and connect it to the plate of the 6K7. But careful not to let the test lead touch anything as it will have HV on it when the set is on. If that stage (detector) is working you will hear the modulated tone from the generator in the speaker of the set with the volume set up a bit.
What is the cathode voltage on the 6K7? and is the filament lit?
Terry
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
Nothing but slight hum from 37-620 - by audin - 01-08-2011, 09:20 PM
Re: Nothing but slight hum from 37-620 - by audin - 01-09-2011, 12:30 AM
Re: Nothing but slight hum from 37-620 - by 7estatdef - 01-09-2011, 06:45 AM
Re: Nothing but slight hum from 37-620 - by audin - 01-09-2011, 09:21 PM



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 803 online users. [Complete List]
» 2 Member(s) | 801 Guest(s)
AvatarAvatar

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