1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

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

Linear Mode
46-1226 run 122 with squeal
Jim Dutridge
Senior Member
****
Posts: 318
Threads: 63
Joined: Mar 2007
City: Toledo State, Province, Country: OH
#4

12-21-2010, 01:52 PM
Squealing problem has been solved. Thanks to a post on this radio over on ARF, I found that the output transformer had been replaced at some point and they had reversed the primary leads. This led to the radio having positive feedback instead of negative. What actually clued us in was by grounding the bottom side of the volume control the squealing stopped. Removing the ground with the radio powered up brought the squeal back. Reversing the primary leads solved it.
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
46-1226 run 122 with squeal - by Jim Dutridge - 12-21-2010, 09:11 AM
Re: 46-1226 run 122 with squeal - by Ron Ramirez - 12-21-2010, 09:37 AM
Re: 46-1226 run 122 with squeal - by Jim Dutridge - 12-21-2010, 10:22 AM
Re: 46-1226 run 122 with squeal - by Jim Dutridge - 12-21-2010, 01:52 PM
Re: 46-1226 run 122 with squeal - by Ron Ramirez - 12-26-2010, 09:22 AM



Users browsing this thread: 3 Guest(s)
[-]
Recent Posts
A Marconi model 86
Dan; I've seen some Marconi sets like that before, one was a console though I'm not sure if it was a model 86. It's a...Arran — 05:09 PM
An attempt to remove the Field Coil from a G speaker
Milkjug plastic? Whatever is chosen for the spider, the material must be compatible with popular adhesives... Th...Chas — 05:05 PM
An attempt to remove the Field Coil from a G speaker
Mike; I would not use plastic from a milk jug for a spider, first it's polyethylene/polypropylene which resists most ...Arran — 04:56 PM
Philco model 60
This is my thread on 60 from 2016. I had to rewind the osc coil, and I actually counted the turns and then rewound i...morzh — 03:34 PM
Philco model 60
Yes, Mark belongs to the same Michigan Antique Radio Club that I do. I suspect that the oscillator coil is in need of a ...Radios1340 — 03:10 PM
A Marconi model 86
Yeah. I am dreading the thought of what to do with all my consoles when I will no longer be able to move them around. I...morzh — 02:51 PM
1947 Silvertone 7086 Wire Recorder/Phono/Radio on YouTube
Cool gadget, Buzz. I took me a couple of second to undestand that that oscillating thing makes the wire to spool correc...morzh — 02:50 PM
A Marconi model 86
My back hurts already, you could build a house with all the wood. PaulPaul Philco322 — 02:49 PM
1947 Silvertone 7086 Wire Recorder/Phono/Radio on YouTube
Part 4 of this series now uploaded link below to anyone interested Buzz — 02:39 PM
Philco model 60
Welcome to the Phorum, Radios1340!  The oscillator coil on the 60 is a common culprit.  I just bought a 60B (June 1934) ...GarySP — 02:33 PM

[-]
Who's Online
There are currently 4682 online users. [Complete List]
» 2 Member(s) | 4680 Guest(s)
AvatarAvatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration