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

38-12 Field Coil rebuild?
#1

I'm restoring a 38-12 which has an open field coil. The speaker cone is like new and audio the transformer appears good. I would prefer not the convert to a PM speaker. Can the field coil be repaired? If anyone has attempted to repair the field coil on this or a similar unit (Speaker model BO-1, p/n 36-1366), I would like to hear from you. Suggestions, including dissassembling the speaker and rewinding the coil, would be very much appreciated. Thanks!
#2

Ed, I believe the concensus of opinion is that if the break in the coil is not near the ends and you can resolder leads, you will have to replace it. The way its mounted on the speaker makes it difficult to remove. Usually force fit rivits. Check near the end, look for greenish coloration indicating a spot where its corroded through. PL
#3

Thanks. I was afraid that would be the verdict. It went up in smoke so I guess it's toast now. And a shame because the cone looks perfect.




Users browsing this thread:
[-]
Recent Posts
Need to purchase some accessories for restoration of my Old Philco Radio
Here is a list of resources found in our online library that you might find useful. Mike's Gobs of Knobs email addres...klondike98 — 01:46 PM
First Radio restoration
Hi Tubeman, Welcome to the Philco Phorum.  Phamily Phriendly Pfun with Phine Pholks Phull of Philco Phacts. (See a p...MrFixr55 — 12:33 PM
First Radio restoration
You could post in the WANTED ADs section here on the Phorum and see if anyone has an RF generator that they want to sell...klondike98 — 11:55 AM
Zenith H725
Good ideas, thank you Arrange and Rich. I have the adhesive aluminum foil already and can try that immediately. More ...EdHolland — 10:18 AM
Graphics for majestic 1050 dial glass.
Murf; I found this thread on the ARF, the first photo has a pretty good view of the dial glass. Regards ArranArran — 01:12 AM
Zenith H725
hello Ed, how about that speacial tape used for ducting it's like foil or how about thin piece of aluminum roof flash...radiorich — 12:19 AM
Zenith H725
Ed; One material that I have seen, but never tried for this was material for making exhaust gaskets, it's similar to ...Arran — 11:42 PM
Zenith H725
I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM

[-]
Who's Online
There are currently 1573 online users. [Complete List]
» 1 Member(s) | 1572 Guest(s)
Avatar

>