1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Phico 52 volume control problem
jerryhawthorne
Phorum Expert
*****
Posts: 1,562
Threads: 56
Joined: Nov 2008
City: Sedona, AZ/Placentia/CA
#1

09-09-2013, 07:05 PM
Working on this radio for a friend. The problem is the volume control comes on loud and smooth from the last quarter of rotation.
Please look at the attached link and the 52 schematic, the one with the center tap at ground.
Now, I have removed the pot and everything test out well, proper resistance from end to end and nice resistance change from both ends to ground.
Looks like the coil on one side is good and the other to the 200 ohm is good. Any ideas? I'm stumped as often I am.Icon_crazy
Thanks, Jerry

http://www.nostalgiaair.org/PagesByModel...029638.pdf
A friend in need is a pest!  Bill Slee ca 1970.
Find
« Next Oldest | Next Newest »


Messages In This Thread
Phico 52 volume control problem - by jerryhawthorne - 09-09-2013, 07:05 PM
RE: Phico 52 volume control problem - by Arran - 09-09-2013, 09:27 PM



Users browsing this thread: 7 Guest(s)
[-]
Recent Posts
37-690 Bass Choke Replacement
While troubleshooting the no bass amplification issue, I think I found the culprit. The choke #104 is reading 164K ohms....Radiodial — 01:42 PM
Philco 60 Squealing
Your IF transformers are tuned to the resonant frequency they were designed for. When you observe the bell curve they di...RodB — 01:35 PM
identify very thin wire for replacement on 37-640
Thanks so much for your help!  I really could not have gotten this far without the kindness of you and other members.  T...georgetownjohn — 11:50 AM
Philco 38-7 Oscillation
Will do, thank you.tludka — 10:26 AM
Philco 38-7 Oscillation
As to your oscillation issue I would align the IF transformers. That may solve the problem. You also would want to check...Radioroslyn — 10:22 AM
Philco 38-7 Speaker
Thank you, I will check this out, I do have some shields I can place around the specific tubes. I searched the four que...tludka — 10:18 AM
Philco 38-7 Speaker
Also, check if any wires going to Grid Caps of the tubes that are supposed to be INSIDE of their respective shields (if ...morzh — 09:54 AM
Philco 38-7 Oscillation
Usually in this forum, when we discuss a radio, we do not multiply threads. You already have a thread on this. If you wa...morzh — 09:27 AM
identify very thin wire for replacement on 37-640
You can possibly use a heatshrink tubing. If you decide to replace the wire, anything gauge 24, 300V rated will do (it ...morzh — 09:25 AM
identify very thin wire for replacement on 37-640
Happy Thanksgiving,  I have attche a photo of a very thin wire with black plastic-looking insulation(some of it has com...georgetownjohn — 09:14 AM

[-]
Who's Online
There are currently 3149 online users. [Complete List]
» 3 Member(s) | 3146 Guest(s)
AvatarAvatarAvatar

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