1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Philco 40-185 Help
Radioroslyn
Phorum Expert
*****
Posts: 7,285
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
#5

06-14-2012, 03:51 PM
Ok then disconnect the wire that goes from + side of 58 to the screen grid pin of the 41 tubes. Now measure the voltage across 58. Should have 300v or so. The two resistors make up a voltage divider on the - side of the high supply, is provides the - bias for the 41's.
Terry
Find
« Next Oldest | Next Newest »


Messages In This Thread
Philco 40-185 Help - by Eric - 06-13-2012, 05:49 PM
RE: Philco 40-185 Help - by 7estatdef - 06-13-2012, 07:56 PM
RE: Philco 40-185 Help - by Eric - 06-13-2012, 08:53 PM
RE: Philco 40-185 Help - by Eric - 06-14-2012, 02:32 PM
RE: Philco 40-185 Help - by 7estatdef - 06-14-2012, 03:51 PM
RE: Philco 40-185 Help - by Eric - 06-14-2012, 04:19 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Hi Cap'n Clock, Unfortunately, I do not have this radio.  This is a shame because this should be a good performer.  2A5...MrFixr55 — 06:48 AM
American Bosch Model 802 auto radio
I think it would come under either American Bosch or United American Bosch. American Bosch made sets for the American We...Arran — 05:53 AM
trying to identify this wire type
Thanks to all for the feedback. As Arran said, it is probably an older replacement and yes it has a grid cap so I will ...georgetownjohn — 09:32 PM
trying to identify this wire type
It's possible that the red wire, actually a grid cap lead, is a very old replacement, I can't remember seeing a pre 1939...Arran — 09:18 PM
Gilfillan Brothers Car Radio?
Hi everyone,  Special thanks to Joe Rossi for tracking down this obscure radio and thanks to others who took up the hun...Antipodal — 08:15 PM
trying to identify this wire type
Here's one source for your wire of many. Take care and BE HEALTHY! Gary P.S. Can't get the right color you need? I ...GarySP — 06:40 PM
trying to identify this wire type
...and modern wire of the appropriate gauges and insulation V-rating (300V minimum, usually shown right on the wire) is ...morzh — 05:47 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
I have a question about this radio, is there anyone that has access to this radio that has an intact unmolested speaker ...captainclock1988 — 04:28 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Well what makes me confuse all of those companies is that all three of those companies (Setchell-Carlson, Stromberg-Carl...captainclock1988 — 04:21 PM
trying to identify this wire type
The red wire is rubber covered wire. The others are cotton braid over rubber often in colors or a tracer, also strand...Chas — 02:43 PM

[-]
Who's Online
There are currently no members online.

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