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, 2025) x

Thread Closed

Linear Mode
46-480 Power Transformer Vibrates
Pepperoni
Member
***
Posts: 160
Threads: 42
Joined: Apr 2011
City: New Port Richey State, Province, Country: Florida
#15

08-24-2013, 02:54 PM
I'm no further then I was 3 weeks ago except the 1K resistor doesn't fry any more after going through the RF section.

I've gone through the audio section with a fine tooth comb and using the troubleshooting procedures laid out in the paperwork. Most of the checks are on caps so I had to isolate them and because of that I just replaced all the caps in this radio.

Speaker voice coil, field and bucking coil are good. All the voltages are good. So I'm stumped on this one. Don't know where to go next. Bad volume control? Bad tone control? Had the volume control out and it appears to be operating properly. Tone control changes the tone of the motorboating. Like I said... STUMPED!

Johnny
"It's Nice To Be Nice To The Nice"
Major Frank Burns Mash 4077th
Website Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
46-480 Power Transformer Vibrates - by Pepperoni - 07-28-2013, 10:18 PM
RE: 46-480 Power Transformer Vibrates - by Pepperoni - 08-24-2013, 02:54 PM
RE: 46-480 Power Transformer Vibrates - by EricS - 09-17-2013, 07:09 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
Preliminary work on wife's Silvertone 2014
Safety caps arrived today.  Soldered one in and had a successful first power-up.  No magic smoke escaped and it tunes in...glyphmon — 09:53 PM

[-]
Who's Online
There are currently no members online.

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