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37-116 Restoration
#29

All tubes checked, installed, and slowly powered up.  Stations all across the dial, though low volume and distorted.  At least I had something to work with.  I discovered the wiper contact on the treble control had a low resistance short to ground.  This caused the bias on the audio driver tube to vary from -14v to ov as I turned the selectivity control.  Fixed that and the radio works great... almost.  One dead band (1.5-7.6 mHz band).  The oscillator dies and there is total silence.  Before I reassembled the tuner chassis I had checked all coils and all measured ok.  I hope I don't have to remove and disassemble the tuner chassis again to find the problem!  It's a pain and it would be difficult to test without reassembly.  Otherwise, it tuned up great and performs admirably.  It's nice to have a signal first shot out of the box.  It gives you something to easily troubleshoot.  I think this will perform as good or better than my Scott 16.  The magnetic tuning is interesting and works quite well.  Once it locks into a station, you have to tune quite far off to get it to lock into the next station.

   


Messages In This Thread
37-116 Restoration - by rfeenstra - 01-19-2019, 03:03 PM
RE: 37-116 Restoration - by rfeenstra - 01-19-2019, 03:14 PM
RE: 37-116 Restoration - by Nathan Slingerland - 01-19-2019, 08:58 PM
RE: 37-116 Restoration - by rfeenstra - 01-19-2019, 09:48 PM
RE: 37-116 Restoration - by Nathan Slingerland - 01-19-2019, 11:28 PM
RE: 37-116 Restoration - by rfeenstra - 01-19-2019, 11:42 PM
RE: 37-116 Restoration - by Radioroslyn - 01-19-2019, 11:46 PM
RE: 37-116 Restoration - by Nathan Slingerland - 01-20-2019, 12:33 AM
RE: 37-116 Restoration - by rfeenstra - 01-20-2019, 12:49 AM
RE: 37-116 Restoration - by rfeenstra - 01-20-2019, 05:36 PM
RE: 37-116 Restoration - by rfeenstra - 01-20-2019, 06:28 PM
RE: 37-116 Restoration - by amptramp - 01-22-2019, 12:52 AM
RE: 37-116 Restoration - by rfeenstra - 01-22-2019, 01:18 AM
RE: 37-116 Restoration - by rfeenstra - 01-27-2019, 12:24 AM
RE: 37-116 Restoration - by Arran - 01-27-2019, 04:04 AM
RE: 37-116 Restoration - by tbone - 01-27-2019, 08:00 AM
RE: 37-116 Restoration - by rfeenstra - 01-27-2019, 10:46 AM
RE: 37-116 Restoration - by rfeenstra - 02-07-2019, 12:10 AM
RE: 37-116 Restoration - by rfeenstra - 02-07-2019, 12:19 AM
RE: 37-116 Restoration - by Ron Ramirez - 02-07-2019, 08:17 AM
RE: 37-116 Restoration - by Ron Ramirez - 02-07-2019, 08:20 AM
RE: 37-116 Restoration - by morzh - 02-07-2019, 08:49 AM
RE: 37-116 Restoration - by jcassity - 02-07-2019, 10:50 AM
RE: 37-116 Restoration - by jcassity - 02-07-2019, 11:12 AM
RE: 37-116 Restoration - by morzh - 02-07-2019, 11:56 AM
RE: 37-116 Restoration - by rfeenstra - 02-07-2019, 06:46 PM
RE: 37-116 Restoration - by rfeenstra - 02-07-2019, 06:53 PM
RE: 37-116 Restoration - by morzh - 02-07-2019, 07:42 PM
RE: 37-116 Restoration - by rfeenstra - 02-10-2019, 11:44 PM
RE: 37-116 Restoration - by Nathan Slingerland - 02-11-2019, 01:28 AM
RE: 37-116 Restoration - by 462ron - 02-11-2019, 09:33 AM
RE: 37-116 Restoration - by rfeenstra - 02-11-2019, 09:56 AM
RE: 37-116 Restoration - by Nathan Slingerland - 02-11-2019, 11:53 AM
RE: 37-116 Restoration - by Ron Ramirez - 02-11-2019, 11:56 AM
RE: 37-116 Restoration - by rfeenstra - 02-11-2019, 12:40 PM
RE: 37-116 Restoration - by Ron Ramirez - 02-11-2019, 12:43 PM
RE: 37-116 Restoration - by Phlogiston - 02-11-2019, 12:50 PM
RE: 37-116 Restoration - by rfeenstra - 02-11-2019, 02:01 PM
RE: 37-116 Restoration - by Kenradio - 02-11-2019, 03:52 PM
RE: 37-116 Restoration - by 462ron - 02-11-2019, 03:53 PM
RE: 37-116 Restoration - by rfeenstra - 02-12-2019, 12:36 AM
RE: 37-116 Restoration - by Ron Ramirez - 02-12-2019, 08:21 AM
RE: 37-116 Restoration - by rfeenstra - 02-12-2019, 11:56 AM
RE: 37-116 Restoration - by Phlogiston - 02-12-2019, 01:10 PM
RE: 37-116 Restoration - by Nathan Slingerland - 02-12-2019, 01:37 PM
RE: 37-116 Restoration - by rfeenstra - 02-12-2019, 01:55 PM
RE: 37-116 Restoration - by Phlogiston - 02-12-2019, 02:37 PM
RE: 37-116 Restoration - by rfeenstra - 02-12-2019, 03:53 PM
RE: 37-116 Restoration - by Ron Ramirez - 02-12-2019, 03:58 PM
RE: 37-116 Restoration - by Kenradio - 02-12-2019, 04:26 PM
RE: 37-116 Restoration - by rfeenstra - 02-12-2019, 04:38 PM
RE: 37-116 Restoration - by mikethedruid - 02-12-2019, 05:34 PM
RE: 37-116 Restoration - by rfeenstra - 02-13-2019, 12:01 PM
RE: 37-116 Restoration - by Phlogiston - 02-13-2019, 12:30 PM
RE: 37-116 Restoration - by radio63 - 02-14-2019, 04:31 PM
RE: 37-116 Restoration - by rfeenstra - 02-14-2019, 05:44 PM
RE: 37-116 Restoration - by Ron Ramirez - 02-14-2019, 07:41 PM
RE: 37-116 Restoration - by rfeenstra - 02-14-2019, 07:51 PM
RE: 37-116 Restoration - by Ron Ramirez - 02-14-2019, 07:54 PM
RE: 37-116 Restoration - by Phlogiston - 02-14-2019, 08:03 PM
RE: 37-116 Restoration - by Ron Ramirez - 02-14-2019, 08:14 PM
RE: 37-116 Restoration - by morzh - 02-14-2019, 09:13 PM
RE: 37-116 Restoration - by Phlogiston - 02-14-2019, 09:16 PM
RE: 37-116 Restoration - by morzh - 02-14-2019, 09:19 PM
RE: 37-116 Restoration - by rfeenstra - 02-14-2019, 09:36 PM
RE: 37-116 Restoration - by rfeenstra - 02-15-2019, 11:46 AM
RE: 37-116 Restoration - by Phlogiston - 02-15-2019, 12:04 PM
RE: 37-116 Restoration - by Ron Ramirez - 02-15-2019, 01:11 PM
RE: 37-116 Restoration - by morzh - 02-15-2019, 01:11 PM
RE: 37-116 Restoration - by rfeenstra - 02-15-2019, 08:38 PM
RE: 37-116 Restoration - by Phlogiston - 02-15-2019, 09:53 PM
RE: 37-116 Restoration - by morzh - 02-15-2019, 10:18 PM
RE: 37-116 Restoration - by rfeenstra - 02-16-2019, 12:06 AM
RE: 37-116 Restoration - by rfeenstra - 03-24-2019, 11:51 PM



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