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 96 work around?
#1

I've started work on a cosmetically nice Philco 96 (one of Philco's last TRF sets, I believe). This set seems clean yet it has a lot of electronic problems with open power resistors, coils and an open input transformer.

The primary of the input transformer (no. 38 in schematic) from the plate of the 27 first audio tube to B+ is open. Secondary goes to push pull 45s and is OK. Question: I know it will be difficult to find another input transformer to drop in so can I use RC coupling as a work around for this set? I have done similar things with battery sets with open interstage audio transformers. I've used about 22K resistor across the open primary and a 0.05-0.1uF capacitor between the primary and secondary of the transformer. Do you think that would work here?
I've attached part of the schematic showing the input transformer.

Thanks,
Mark
   


Messages In This Thread
Philco 96 work around? - by retiredinprescott - 07-12-2013, 09:34 PM
RE: Philco 96 work around? - by codefox1 - 07-12-2013, 10:14 PM
RE: Philco 96 work around? - by BrendaAnnD - 07-12-2013, 10:23 PM
RE: Philco 96 work around? - by jerryhawthorne - 07-12-2013, 11:11 PM
RE: Philco 96 work around? - by Ron Ramirez - 07-13-2013, 07:22 AM
RE: Philco 96 work around? - by retiredinprescott - 07-13-2013, 08:48 AM



Users browsing this thread: 1 Guest(s)
[-]
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 2358 online users. [Complete List]
» 1 Member(s) | 2357 Guest(s)
Avatar

>