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

46-420 IF Transformer Issue
#1

Hello all! I'm a newbie to the phorum so excuse my decorum. I have a "Hippo" model that is holding me up. The IF transformer in front & behind the speaker is dead. I need to remove it to replace the caps within. Has anyone else completed this task with success? Power goes in but doesn't come out, so I need to dig in a bit more. Thanks...    
#2

Hello Rich and welcome to the Phorum. First, I love puns and you opened with two, bravo! Next, your IF transformer sounds like an open primary winding. Removing them is usually pretty simple but reinstalling is tricky if you don't mark the can position on the chassis and the relative position of the coil form inside the can. After you get it out use an ohmmeter to determine which winding is the primary and pray you can find a broken or loose wire dangling near a terminal. Sometimes all that's needed is to reflow solder to the terminals to reestablish the connection. If none of this solves the problem then the open is internal to the winding. On rare occasions the wire can be unwound and the break will be a few turns in. Others have replaced the entire can with one from a donor radio but it must be one that has the same resonant frequency. Work slowly and carefully, the wires are delicate. GL
#3

Thanks, Rod! I've worked on Zenith transformers with mica issues before. I didn't know what the process was trying to get the assembly out of the Philco can. There are two gold tabs on two sides. I didn't know if I needed a special tool or what.
#4

looking at your photo i see a bent over tab and theres probably another opposite it on the skirt of the can




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
IF can wire size and Rubber mounts?
Thanks to both members for your help regarding wire and tuner mtg supports. regards--Johngeorgetownjohn — 09:33 AM
Hickok AC51 tube tester
Note that no power cord, power switch, or power transformer switch are shown. That (along with my experience with full s...DaleHCook — 07:09 AM
IF can wire size and Rubber mounts?
A pair of wire strippers can give you an idea of what the existing gauge of the wire leads are in the IF can, I think it...Arran — 06:07 AM
My last cabinet for this year
Hello Dan, That is really beautiful what great looking radio you have ! I have friends who live in Calgary and the wea...radiorich — 01:51 AM
Philco Predicta Siesta picture over time getting dimmer
I found that the wire insulation was burnt.  The fly back needs corona dope! Why would someone put that there?Platinumblonde36 — 01:09 AM
Philco Predicta Siesta picture over time getting dimmer
This is what it looked like beforePlatinumblonde36 — 01:01 AM
Philco Predicta Siesta picture over time getting dimmer
Platinumblonde36 — 12:58 AM
Philco Predicta Siesta picture over time getting dimmer
Platinumblonde36 — 12:57 AM
Philco Predicta Siesta picture over time getting dimmer
I'm finding some strange things in my set and for the most part it's also original, so I need to start going over everyt...Platinumblonde36 — 12:55 AM
12' Philco
Not anymore Mike. Andre The Giant Born: May 19, 1946, Coulommiers, France Died: Jan 28, 1993 (46 years), Paris, Fran...RodB — 11:53 PM

[-]
Who's Online
There are currently 4039 online users. [Complete List]
» 3 Member(s) | 4036 Guest(s)
AvatarAvatarAvatar

>