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

48-1270 restoration in progress
#3

Tracksoup Wrote:Howdy all. I have aquired a Philco 48-1270, which is in pretty We have figured out most of the wiring due to the minute pieces left sticking out of the plugs and such. Where we are running in to problems is hooking up the phono. We have a cloth covered coaxil cable coming off the phono and one also coming off the chassis, but the two of them don't match in color or size. Not finding any other wires of this type coming out of the chassis, this has us stumped. I did get a copy of the scimattics off the internet but the wiring diagram might as well be greek...lol. Thanks, Jim.

Hi Jim,

The phono uses an impedance matching transformer that was likely mounted inside cabinet near the speaker. The phono cables plug into to this. Hope you still have the cabinet. The phono pickup is a magnetic type with low impedance but tubes typically have a high input impedance. Impedance matching give maximum power transfer and improves fidelity.

You are taking on a tough project and wish you well.

Richard


Messages In This Thread
48-1270 restoration in progress - by Guest - 03-16-2010, 03:14 PM
Re: 48-1270 restoration in progress - by planigan - 03-21-2010, 01:43 AM
Re: 48-1270 restoration in progress - by rghines1 - 03-21-2010, 03:49 PM
Re: 48-1270 restoration in progress - by planigan - 03-22-2010, 12:23 AM
Re: 48-1270 restoration in progress - by Guest - 03-23-2010, 07:41 PM
Re: 48-1270 restoration in progress - by Guest - 03-23-2010, 07:56 PM
Re: 48-1270 restoration in progress - by Guest - 03-23-2010, 08:20 PM
Re: 48-1270 restoration in progress - by Guest - 03-23-2010, 08:24 PM
Re: 48-1270 restoration in progress - by Guest - 03-23-2010, 08:36 PM
Re: 48-1270 restoration in progress - by Guest - 03-23-2010, 09:18 PM
Re: 48-1270 restoration in progress - by Guest - 03-24-2010, 09:35 PM



Users browsing this thread:
[-]
Recent Posts
Philco Model 38-7: what caps & resistors do fail typically?
Since you stated earlier, you have a console 38-7XX.  They also had a 38-7T (table), and 38-7CS (chairside).  A very nic...GarySP — 01:18 PM
Part numbers to model cross
That I wouldn't know, but sometimes the radio document itself shows one, same as the capacitor cans' etc pinouts.morzh — 12:46 PM
Part numbers to model cross
Thank you morzh, that is exactly what I was looking for. Now , is there some where that shows pinouts for Philco power ...Jim Dutridge — 11:37 AM
Restoration of the Canadian General Electric A-87
Thanks for your help Michael. In fact, this video is only an intermediate result. Later I had to apply another tinting l...RadioSvit — 09:01 AM
Restoration of the Canadian General Electric A-87
Great job on the cabinet. PS. In the US notation, "kenotron" refers to specific type of tubes; we call re...morzh — 08:24 AM
Part numbers to model cross
This document has at least some tables of models and parts used. Example: Choke 32-7572, used in 604 radio. Search f...morzh — 08:19 AM
Restoration of the Canadian General Electric A-87
I also checked all the radio tubes on my Hickok 530 tube tester. The 5Z3 kenotron turned out to be faulty, all the other...RadioSvit — 08:02 AM
Restoration of the Canadian General Electric A-87
Well... While the varnish is drying up, I started repairing the chassis... Of course I started by replacing the pa...RadioSvit — 07:12 AM
Philco Model 38-7: what caps & resistors do fail typically?
Hello Martin, Welcome aboard our little community what great Model 38-7 Sincerely Richardradiorich — 12:30 AM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum Martin. I count about 9 paper caps, the 3 electrolytic caps and 2-Y2 safety caps to replace th...RodB — 09:44 PM

[-]
Who's Online
There are currently 1368 online users. [Complete List]
» 1 Member(s) | 1367 Guest(s)
Avatar

>