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

Model 84, code 121 question(s)
#1

Found a nice, unmolested example of the 1934 cabinet design at the WARCI meet Sunday, and have a few questions with regards to the electronic restoration. First, for reference, here's a link to the PDF file schematic from Nostalgia Air. I've ordered "good" copies from Chuck: http://www.nostalgiaair.org/PagesByModel...013875.pdf

My first concern is this wire that is either cut or more likely broken off. It's attached to the OSC coil (I pointed to the lead the end of the wire is soldered to) You can see the broken end in the upper right hand corner of the pic:
   

Here is the broken off end, which appears MAY have come from the off/on/volume control? :
   

Here is a full view of the bottom of the chassis, pointing to the broken wire:
   

I'm hoping this set won't have the same OSC coil nightmares as the model 89's do. As with that set, if anyone has any info on the 84 as far as which terminals on the coil are the primary and secondary windings and (hopefully I won't need it) the number of turns of wire for each and direction to wind?

The other question concerns the electrolytic can containing an 8 mfd and a 10 mfd:
   
It appears to me that the terminal on top directly under the large resistor is the ground. There's green paint next to the terminal. Is that correct? Also, it appears to be a 'floating ground', as it's only grounded within the can itself, and not on the chassis (as there is a cardboard ring around the outside of the can). Is that the true ground, where everything on that terminal would be connected to the negative end of the replacement electrolytics?

Sorry for the dumb questions. Until I get a better, readable schematic, I'm at a loss, but I know there are some very knowledgeable and helpful Phorum members who I'm sure have tackled one of these small cathedrals at some point. Thanks!

Greg V.
West Bend, WI
Member WARCI.org


Messages In This Thread
Model 84, code 121 question(s) - by NostalgiaRadioTime - 06-03-2014, 07:40 PM
RE: Model 84, code 121 question(s) - by morzh - 06-03-2014, 08:47 PM
RE: Model 84, code 121 question(s) - by morzh - 06-03-2014, 10:05 PM
RE: Model 84, code 121 question(s) - by morzh - 06-04-2014, 08:58 AM
RE: Model 84, code 121 question(s) - by morzh - 06-04-2014, 01:33 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Hi Cap'n Clock, Unfortunately, I do not have this radio.  This is a shame because this should be a good performer.  2A5...MrFixr55 — 06:48 AM
American Bosch Model 802 auto radio
I think it would come under either American Bosch or United American Bosch. American Bosch made sets for the American We...Arran — 05:53 AM
trying to identify this wire type
Thanks to all for the feedback. As Arran said, it is probably an older replacement and yes it has a grid cap so I will ...georgetownjohn — 09:32 PM
trying to identify this wire type
It's possible that the red wire, actually a grid cap lead, is a very old replacement, I can't remember seeing a pre 1939...Arran — 09:18 PM
Gilfillan Brothers Car Radio?
Hi everyone,  Special thanks to Joe Rossi for tracking down this obscure radio and thanks to others who took up the hun...Antipodal — 08:15 PM
trying to identify this wire type
Here's one source for your wire of many. Take care and BE HEALTHY! Gary P.S. Can't get the right color you need? I ...GarySP — 06:40 PM
trying to identify this wire type
...and modern wire of the appropriate gauges and insulation V-rating (300V minimum, usually shown right on the wire) is ...morzh — 05:47 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
I have a question about this radio, is there anyone that has access to this radio that has an intact unmolested speaker ...captainclock1988 — 04:28 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Well what makes me confuse all of those companies is that all three of those companies (Setchell-Carlson, Stromberg-Carl...captainclock1988 — 04:21 PM
trying to identify this wire type
The red wire is rubber covered wire. The others are cotton braid over rubber often in colors or a tracer, also strand...Chas — 02:43 PM

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

>