Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

48-460 poor tone quality and squeals on stations
#1

I have just finished recapping my "Hippo" 48-460. The set seems to have too much treble and sounds shrill. Also, the volume control doesn't have to be turned very much for the set to quickly play very loud. I followed the schematic and replaced the capacitors one at a time. Also, I don't remember where it was connected to, but it looks like a previous repair had a .001 400v paper cap in the audio section. It wasn't shown on the schematic or parts layout in Ryders so I clipped out the capacitor. I wished I had made a note of where it was connected.

Would changing the .02 capacitor from the 50L6 plate to floating ground fix the tone issue? After that is completed, the set is going to need realignment as I replaced all caps in the RF and oscillator circuit in the same position the originals were in. The set has high pitch squeal when some stations are tuned in.

Does anyone know where to get a new volume control with the long shaft? The on/off switch is broken. Had to wire around it to test the set. If I can't get a replacement, I might have to just insert a line switch in the ac cord and be done with it.
#2

Yes the cap from the 50L6 plate (pin 3) to gnd will change the tone. The larger the cap the less highs you will have. You may be able to repair the switch or just replace the switch. If you end up replacing the whole control you can use one with short shaft. Just use a small piece of 1/4 rubber hose to couple a 1/4 rod to the shaft. Check your gnd connection at the volume control if it is open that can cause the volume to increase rapidly.
Terry

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got it!

Terry




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same.  I find myself wanting to find some way to block out the...glyphmon — 12:03 AM
54C Complete Teardown/Rebuild
Hello roy, here is a link to the schematic . Sincerely Richardradiorich — 11:54 PM
54C Complete Teardown/Rebuild
Richard, The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM
Preliminary work on wife's Silvertone 2014
Did an alignment today which was interesting.  IF alignment went great, almost all was already spot-on.  Adjusting on th...glyphmon — 11:35 PM
54C Complete Teardown/Rebuild
The main problem with adding a Bluetooth input is that this set lacks a traditional power transformer to isolate it from...radiorich — 11:19 PM
54C Cabinet Refinish
I started stripping this cabinet before it got super chilly out because I knew I wasn't going to be able to work on ...glyphmon — 11:18 PM
54C Complete Teardown/Rebuild
While I'm waiting to wrap up the final steps on my wife's Silvertone 2014, I started disassembly on the next project.  O...glyphmon — 11:07 PM
Preliminary work on wife's Silvertone 2014
Hello roy, that great news glad it worked out for you !! Sincerely Richardradiorich — 10:50 PM

[-]
Who's Online
There are currently 1224 online users. [Complete List]
» 2 Member(s) | 1222 Guest(s)
AvatarAvatar

>