Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

42-PT-93 Please Help
#1

Hello, all.

Well, I couldn't resist picking up another radio.  It's a 42-PT-93.  The schematics are located here:  

http://www.nostalgiaair.org/PagesByModel...014176.pdf  

I did the usual recap and replaced the resistors but I am not getting any sound from it but the tubes and dial lamp light up.  The tubes are also good.  I tried touching the center tab of the volume control but don't get any hum.  I replaced the volume control but still don't get any hum but the speaker makes a pop when I connect it to a 9v battery.  When I tried taking ohm readings on the 50L6GT, I accidentally touched both pin 2 and 3 at the same time and got a loud hum from the speaker.  

I tried taking readings on the loctals by connecting the negative of my digital multimeter to ground, turning the volume control to full, and touching the positive to each pin but I must be doing something wrong because I don't get readings on any of them.  

I measured the oscillator coil from ground with the volume turned all the way up and got these readings  (not sure if I have the pins correct, though):

Pin 1 - .7
Pin 2 - no reading (DMM doesn't change if that makes sense)
Pin 3 - no reading
Pin 4 - 7.1
Pin 5 - 6.9

I read somewhere on this forum how to rewind this type of oscillator but I can't find it now.  If someone could point me in the right direction, I'd appreciate it.  A picture of it is attached.

Finally, the case has a built in loop antenna.  The two ends were unattached to anything when I got it and I can't figure out where one end goes.  I know one goes to the tuning condenser but where does the other end attach?

Any help is greatly appreciated.

Dave


Attached Files Image(s)
       


Messages In This Thread
42-PT-93 Please Help - by dseverson - 05-04-2015, 02:56 PM
RE: 42-PT-93 Please Help - by Nick3092 - 05-04-2015, 03:18 PM
RE: 42-PT-93 Please Help - by morzh - 05-04-2015, 03:21 PM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-04-2015, 04:04 PM
RE: 42-PT-93 Please Help - by dseverson - 05-04-2015, 11:22 PM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-05-2015, 06:10 AM
RE: 42-PT-93 Please Help - by dseverson - 05-05-2015, 04:21 PM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-05-2015, 06:34 PM
RE: 42-PT-93 Please Help - by dseverson - 05-05-2015, 08:11 PM
RE: 42-PT-93 Please Help - by dseverson - 05-05-2015, 08:12 PM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-05-2015, 08:30 PM
RE: 42-PT-93 Please Help - by dseverson - 05-05-2015, 08:16 PM
RE: 42-PT-93 Please Help - by dseverson - 05-05-2015, 09:42 PM
RE: 42-PT-93 Please Help - by dseverson - 05-06-2015, 01:53 PM
RE: 42-PT-93 Please Help - by Nick3092 - 05-06-2015, 02:18 PM
RE: 42-PT-93 Please Help - by dseverson - 05-06-2015, 04:18 PM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-06-2015, 06:01 PM
RE: 42-PT-93 Please Help - by dseverson - 05-07-2015, 10:18 AM
RE: 42-PT-93 Please Help - by dseverson - 05-11-2015, 11:39 PM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-12-2015, 05:15 AM
RE: 42-PT-93 Please Help - by codefox1 - 05-12-2015, 08:07 AM
RE: 42-PT-93 Please Help - by dseverson - 05-12-2015, 11:38 AM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-12-2015, 05:49 PM
RE: 42-PT-93 Please Help - by dseverson - 05-12-2015, 08:21 PM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-12-2015, 08:32 PM
RE: 42-PT-93 Please Help - by dseverson - 05-12-2015, 09:06 PM
RE: 42-PT-93 Please Help - by dseverson - 05-13-2015, 12:13 AM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-13-2015, 03:02 PM
RE: 42-PT-93 Please Help - by dseverson - 05-13-2015, 08:05 PM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-13-2015, 08:24 PM
RE: 42-PT-93 Please Help - by dseverson - 05-13-2015, 09:12 PM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-14-2015, 05:14 AM
RE: 42-PT-93 Please Help - by codefox1 - 05-14-2015, 08:19 AM
RE: 42-PT-93 Please Help - by dseverson - 05-14-2015, 10:08 AM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-14-2015, 05:28 PM
RE: 42-PT-93 Please Help - by dseverson - 05-14-2015, 06:27 PM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-14-2015, 08:12 PM
RE: 42-PT-93 Please Help - by dseverson - 05-14-2015, 08:49 PM
RE: 42-PT-93 Please Help - by dseverson - 05-15-2015, 12:26 AM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-15-2015, 05:43 AM
RE: 42-PT-93 Please Help - by dseverson - 05-15-2015, 12:28 PM
RE: 42-PT-93 Please Help - by dseverson - 05-15-2015, 10:57 PM
RE: 42-PT-93 Please Help - by dseverson - 05-16-2015, 12:15 AM
RE: 42-PT-93 Please Help - by Nick3092 - 05-16-2015, 07:52 AM
RE: 42-PT-93 Please Help - by dseverson - 05-16-2015, 04:52 PM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-16-2015, 05:38 PM
RE: 42-PT-93 Please Help - by dseverson - 05-19-2015, 10:43 AM
RE: 42-PT-93 Please Help - by Nick3092 - 05-19-2015, 12:09 PM
RE: 42-PT-93 Please Help - by dseverson - 05-19-2015, 02:06 PM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-19-2015, 08:09 PM
RE: 42-PT-93 Please Help - by dseverson - 05-30-2015, 12:38 AM
RE: 42-PT-93 Please Help - by Radioroslyn - 05-30-2015, 12:14 PM
RE: 42-PT-93 Please Help - by dseverson - 06-03-2015, 01:29 PM
RE: 42-PT-93 Please Help - by Eliot Ness - 06-03-2015, 02:50 PM
RE: 42-PT-93 Please Help - by dseverson - 06-03-2015, 03:52 PM



Users browsing this thread: 2 Guest(s)