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
Knob shaft doesn't turn tuning coil
captainslack
Member
***
Posts: 65
Threads: 15
Joined: Feb 2014
City: Clayton, NC
#1

05-10-2014, 05:21 PM
Finally brought the Philco 71 back after a stay at my buddy's place getting repaired. Once home, I hooked it up to my signal generator to get it fine tuned. Turned the knob to the bottom of the AM band to run the signal test, but I went a little too far past the end of the dial. Suddenly, I couldn't tune the radio anymore even though the knob still wound. I assumed the dial cord had come off it's pulley, but that wasn't the case. Seems the shaft that the knob sits on no longer turns the turning coil. I can move the coil manually and everything works fine, but the knob shaft only spins by itself.

Any ideas on what might have happened or how to fix this?
Find
« Next Oldest | Next Newest »


Messages In This Thread
Knob shaft doesn't turn tuning coil - by captainslack - 05-10-2014, 05:21 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Philco 60 Squealing
I seem to remember eliminating a squeal by changing the IF frequency by a few KHz. Not that you should put too much tru...fenbach — 08:48 PM
Philco 42-390, code 121 speaker
These speakers pop up on eBay regularly, even if at bloated prices. Honestly, have not seen many parts on swapmeets.morzh — 08:38 PM
Philco 38-7 Speaker
The put-put is not like the speaker problem.morzh — 08:29 PM
Mission Bell Model 19A Car Radio
Hello everyone,  As mentioned in my last post I was going to see if the vibrator / rectifier section could be persuaded...Antipodal — 08:21 PM
Philco 60 Squealing
Wondering if I did it backwards. If a coil was wound backwards, the oscillator would not work at all. Old school...Chas — 07:23 PM
Philco 38-7 Speaker
4-ohm speaker. Black, Green leads.tludka — 07:00 PM
Philco 42-390, code 121 speaker
#87 on the schematic.  This radio had a 8" Zenith  speaker attached to it when I got it. I do don't know the hist...Stevelog — 06:39 PM
Philco 60 Squealing
I'm pretty sure I now have the litz wire soldered. This did not make any difference. Back in April I rewound the seconda...dconant — 06:25 PM
Philco 38-7 Speaker
Just to make sure, you chose either 4 ohm into 5K or into 10K? (blk-org or blk-grn)morzh — 06:23 PM
Philco 38-7 Speaker
I have let this one sit because of other duties. Now I am back, and I have a couple of questions. I hooked up a Hammond ...tludka — 05:34 PM

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

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