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

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
A Marconi model 86
A backbreaker.....PaulPaul Philco322 — 08:12 PM
A Marconi model 86
>>What a behemoth! A Juggernaut.morzh — 07:47 PM
Philco 70 antenna lead
I am not sure I understood about the coils and the mush. I looked an more than one coil in 20, 70, 90, 60, Zeniths and ...morzh — 07:46 PM
A Marconi model 86
:e_biggrin: What a behemoth!  I hope the final result is as much a quality sounding example!  Keep us posted on your pro...GarySP — 07:32 PM
A Marconi model 86
I should add that the double conversion may only be used on the shortwave bands, but I haven't looked at the schematic t...Arran — 07:27 PM
Philco 70 antenna lead
Yes, that wire will not pick up much interference as routed - the RF at that level won't be affected, and if you have st...radio1 — 07:26 PM
Philco model 60
I'm also a member of MARC. Did you attend the Vintage Electronics Expo in Waterford, MI last month? That's where I got...GarySP — 07:22 PM
A Marconi model 86
Dan Double conversion is using two IF converters instead of one. This improves the image response. morzh — 07:15 PM
A Marconi model 86
Thanks Arran; I don't even know what a double conversion is, but i do have a good friend In Nova Scotia that would k...Dan Walker — 07:01 PM
A Marconi model 86
Dan; I've seen some Marconi sets like that before, one was a console though I'm not sure if it was a model 86. It's a...Arran — 05:09 PM

[-]
Who's Online
There are currently 4170 online users. [Complete List]
» 2 Member(s) | 4168 Guest(s)
AvatarAvatar

>