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

Philco Model 20
#1

Just bought one of these at a local shop. Case in great condition but they did not know if the electronics worked. Replaced the cord and electrolytics in the metal can before powering on. Also verified tubes and found 80 and 71 tubes were swapped - could have been messy. I then powered on and did hear some life coming out - no stations yet - but I will work on that.

I do have a question on the other metal can condensers. The 3583 and 3557 metal Bypass condensers are showing in the Philco as having a working voltage of 1200V - has anyone replaced these and do you know if I need to replace them with 1200v ratings or will 600V suffice? I'll post pics shortly.
#2

So where are they located electrically?? On the no station problem I'll bet you've got some open rf coils. Seem to be a common problem with the early sets. Also the audio driver transformer is anther go place to look for a problem.
GL
Terry
#3

As far as I remember (Philco 20 was the first radio I restored) there are no caps there that need to be 1200V.
600WV rating is sufficient anywhere in the 20.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Jackson 715 not working
Now that you posted the schematic, I don't know why that Sprague electrolytic cap is across the meter, as it is not indi...MrFixr55 — 05:51 PM
HiFi (Chifi) tube amp build - but my own design.
What may be lacking in the PP Tube amps may be the 2nd harmonics, which some, especially RCA back in the day called &quo...MrFixr55 — 05:32 PM
Jackson 715 not working
Usually in an emission tester, the tube under test is measured as if it were a diode. So, some testers connect all the g...RodB — 04:17 PM
Restoring Philco 37-604C
Yep. F5 is green, D5 is Red. Red is Bad. Green is Clean.morzh — 01:30 PM
Jackson 715 not working
I did start to do that but I stalled out because I could not figure out how the grid and plate get voltage. In this diag...daveone23 — 11:52 AM
Restoring Philco 37-604C
(Insert Homer Simpson "DOPF" Here.) When all fails, look at the can. Took the Ron Ramirez advice, red Caig D...MrFixr55 — 09:23 AM
Philco 91 Speaker Replacement
From your text I am not sure if you intend to use the existing speaker with a resistor instead of the field coil. It wo...morzh — 08:44 AM
Philco 91 Speaker Replacement
My field coil is bad. I am still hoping to find an original, but if I can't I will go with a fitting Philco speaker, 125...dconant — 08:34 AM
Philco 91 Speaker Replacement
As Rod said, it is OK to use a fitting speaker, and then look for an original one. If you buy a Hammond 125 output tr...morzh — 08:15 AM
Philco 91 Speaker Replacement
Yes, I often have to substitute, then keep an eye out for an original. In the meantime, the radio is working and being e...RodB — 08:02 AM

[-]
Who's Online
There are currently 5334 online users. [Complete List]
» 1 Member(s) | 5333 Guest(s)
Avatar

>