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

Philco 90 1-47 Triode
#4

Ok

I think I stand corrected.

I think the output transformer is ok. On the primary side i have 450 and on the secondary side I have 0.3.

I was expecting that the field coil was installed and working when it was not.

So, that brings two questions.

1) Can I put my old single end transformer on the new speaker? Remove the push pull transformer and install the single ended one? I think the voice and field coils are the same. Hence i think i can swap the transformer and be happy.

2) The main unit needs to be gone thru. No ifs and or buts. Re cap. New resistors. Check tubes etc. But my question is, what causes these field coils to burn out or go open? Would it be bad filter caps? A bad tube? A short to ground? Something caused the field coil to go open on this unit. Need to be on guard and make sure it gets resolved.

Cheers and Thanks Kindly!!

Current Restorations In Process
RME DB22A - Lafayette KT200 - Hammerlund HQ 140 XA
Johnson Viking II - Viking VFO 122 - Johnson Ranger
Philco Model 90 Low Boy

I got stuff.... and things.... and I never said I could spell!


Messages In This Thread
Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 05:02 PM
RE: Philco 90 1-47 Triode - by morzh - 06-25-2023, 07:10 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 07:18 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 08:28 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-25-2023, 08:43 PM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-25-2023, 09:06 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 09:07 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 09:11 PM
RE: Philco 90 1-47 Triode - by morzh - 06-25-2023, 09:31 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 09:33 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-25-2023, 09:45 PM
RE: Philco 90 1-47 Triode - by DaleHCook - 06-25-2023, 09:50 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-25-2023, 09:59 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 10:04 PM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-25-2023, 10:12 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 10:18 PM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-25-2023, 10:22 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-25-2023, 10:25 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-26-2023, 08:31 AM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-26-2023, 11:32 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-26-2023, 03:15 PM
RE: Philco 90 1-47 Triode - by morzh - 06-26-2023, 06:46 PM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-26-2023, 07:23 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-26-2023, 08:28 PM
RE: Philco 90 1-47 Triode - by GarySP - 06-26-2023, 08:59 PM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-26-2023, 09:16 PM
RE: Philco 90 1-47 Triode - by RodB - 06-26-2023, 11:08 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-27-2023, 07:26 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 08:35 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 10:18 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 10:51 AM
RE: Philco 90 1-47 Triode - by morzh - 06-27-2023, 11:02 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 11:05 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 11:06 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 11:30 AM
RE: Philco 90 1-47 Triode - by morzh - 06-27-2023, 11:34 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 11:42 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 11:44 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 11:54 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 12:03 PM
RE: Philco 90 1-47 Triode - by morzh - 06-27-2023, 12:10 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 01:07 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 01:11 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 01:22 PM
RE: Philco 90 1-47 Triode - by morzh - 06-27-2023, 01:23 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 01:27 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 01:34 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 01:34 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 01:37 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-27-2023, 01:39 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 01:53 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-27-2023, 02:07 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 02:13 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 06-27-2023, 02:42 PM
RE: Philco 90 1-47 Triode - by morzh - 06-27-2023, 02:43 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-27-2023, 08:10 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-28-2023, 07:07 AM
RE: Philco 90 1-47 Triode - by morzh - 06-28-2023, 10:33 AM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-28-2023, 10:44 AM
RE: Philco 90 1-47 Triode - by morzh - 06-28-2023, 12:55 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 06-28-2023, 05:12 PM
RE: Philco 90 1-47 Triode - by Ron Ramirez - 06-29-2023, 08:24 AM
RE: Philco 90 1-47 Triode - by MrFixr55 - 06-29-2023, 06:02 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 12-21-2023, 11:40 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 12-22-2023, 12:34 AM
RE: Philco 90 1-47 Triode - by RodB - 12-22-2023, 10:50 AM
RE: Philco 90 1-47 Triode - by GarySP - 12-22-2023, 11:04 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 12-22-2023, 11:08 AM
RE: Philco 90 1-47 Triode - by Mike_RF - 12-22-2023, 11:10 AM
RE: Philco 90 1-47 Triode - by morzh - 12-22-2023, 11:28 AM
RE: Philco 90 1-47 Triode - by Radioroslyn - 12-22-2023, 01:31 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 12-22-2023, 01:55 PM
RE: Philco 90 1-47 Triode - by RodB - 12-22-2023, 07:20 PM
RE: Philco 90 1-47 Triode - by Mike_RF - 12-24-2023, 06:35 PM
RE: Philco 90 1-47 Triode - by RodB - 12-24-2023, 09:56 PM
RE: Philco 90 1-47 Triode - by Radioroslyn - 12-24-2023, 11:32 PM



Users browsing this thread: 3 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.

>