Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

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

Stromberg-Carlson 320-T
#12

A bit of progress on this chassis.  I've stuffed the 3 can electrolytic caps.  I have seen a few queries on restuffing these recently and in this particular case I took a little different approach than I've done before because of the style of cap.  These have the crimped end that holds the rubber insulation around the center aluminum lead (positive electrode).  The previous repair had clipped off the wiring lugs attached to the aluminum lead so it was necessary to find a way to connect new wires to these caps. 

[Image: https://www.dropbox.com/s/sav43w75y2vato....jpg?raw=1]

I open these up by using a utility knife and rolling the blade along the can with a little bit of pressure.  Just keep rolling it with slight pressure and eventually it will cut through the can.  You do have to be gently so as not to push in the can but even that can be fixed.  I find it makes a cleaner cut than a hack saw blade.

[Image: https://www.dropbox.com/s/pkatx45ihsql5x....jpg?raw=1]

Here's that center aluminum lead.  The rubber insulation around it was not in good shape and I did not want to trust it (actually the rubber in this picture was the best of the three and this electrode still had liquid in it!)  The aluminum lead will just pull out (you may have to clip off any remains of the wire lug that was on the lead) and the rubber all came out with a bit of digging and drilling.

[Image: https://www.dropbox.com/s/k6evn0h7re1rs3....jpg?raw=1]

[Image: https://www.dropbox.com/s/180b4x0e0rftn0....jpg?raw=1]

I used plastic tubing from the hardware store to replace the rubber insulation.  From what I could find I think it will have sufficient insulation properties (we'll find out!).  I wound up only using the smaller diameter tubing.  It fit in the crimped space snuggly and when the bolt I used for the replacement electrode is inserted it gets a little tighter. In this set the negative goes to the chassis ground so I used some copper strap that will fit between the can and the chassis clamp to make the ground connection.

[Image: https://www.dropbox.com/s/mdhcl537rlbvp6....jpg?raw=1]

[Image: https://www.dropbox.com/s/tpjqvw5o2dttb0....jpg?raw=1]
[Image: https://www.dropbox.com/s/h7xj9lmxqsndtd....jpg?raw=1]

I wrapped the replacement cap and bolt with electrical tape to help keep things insulated and add a litte support.  A thin plastic sign from the hardware store, cut into a strip and then formed into a cylinder also helps keep the top and bottom of the aluminum can together.  I could have epoxied both ends of the plastic but elected to only epoxy the bottom end.  Once the can is in the chassis clamps it seems to be pretty secure.

[Image: https://www.dropbox.com/s/7ln76gk8cy7vab....jpg?raw=1]

[Image: https://www.dropbox.com/s/t3qkxl9e856x8k....jpg?raw=1]


Messages In This Thread
Stromberg-Carlson 320-T - by klondike98 - 04-15-2021, 10:19 PM
RE: Stromberg-Carlson 320-T - by radiorich - 04-15-2021, 11:22 PM
RE: Stromberg-Carlson 320-T - by OZ4 - 04-16-2021, 10:34 AM
RE: Stromberg-Carlson 320-T - by Chas - 04-16-2021, 12:07 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 04-16-2021, 12:54 PM
RE: Stromberg-Carlson 320-T - by mikethedruid - 04-16-2021, 01:33 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 04-16-2021, 01:55 PM
RE: Stromberg-Carlson 320-T - by Arran - 04-16-2021, 09:27 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 04-16-2021, 09:49 PM
RE: Stromberg-Carlson 320-T - by Arran - 04-17-2021, 01:55 AM
RE: Stromberg-Carlson 320-T - by klondike98 - 04-17-2021, 02:37 AM
RE: Stromberg-Carlson 320-T - by klondike98 - 04-22-2021, 04:34 PM
RE: Stromberg-Carlson 320-T - by Eliot Ness - 04-23-2021, 02:56 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 04-25-2021, 08:13 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 05-02-2021, 11:07 PM
RE: Stromberg-Carlson 320-T - by Eliot Ness - 05-03-2021, 10:32 AM
RE: Stromberg-Carlson 320-T - by morzh - 05-03-2021, 10:39 AM
RE: Stromberg-Carlson 320-T - by klondike98 - 05-03-2021, 09:35 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 05-04-2021, 11:58 PM
RE: Stromberg-Carlson 320-T - by RodB - 05-05-2021, 09:30 AM
RE: Stromberg-Carlson 320-T - by morzh - 05-05-2021, 09:32 AM
RE: Stromberg-Carlson 320-T - by Eliot Ness - 05-05-2021, 10:59 AM
RE: Stromberg-Carlson 320-T - by klondike98 - 05-05-2021, 01:23 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 12-31-2021, 10:25 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 01-04-2022, 10:06 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 01-17-2022, 12:55 PM
RE: Stromberg-Carlson 320-T - by Brad Winder - 01-18-2022, 12:51 PM
RE: Stromberg-Carlson 320-T - by Eliot Ness - 01-18-2022, 02:11 PM
RE: Stromberg-Carlson 320-T - by Paul Philco322 - 01-18-2022, 03:32 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 01-19-2022, 05:26 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 01-21-2022, 01:08 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 01-30-2022, 02:24 PM
RE: Stromberg-Carlson 320-T - by Paul Philco322 - 01-30-2022, 02:26 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 05-30-2022, 09:41 PM
RE: Stromberg-Carlson 320-T - by klondike98 - 01-11-2023, 03:49 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM
The list of my radio & TV collection!
Magical chords of forgotten melodies, old nostalgic music on an old radio... Saturday night blues on the Mid-Waves on an...RadioSvit — 12:20 PM
Philco 42-345 Restoration/Repair
Thank you MrFixr55 the issue with this radio is that the internal coil antenna is missing and there was a wire in its pl...osanders0311 — 11:34 AM
Philco 610B oscillator wiring
Regarding the oscillator circuit which is comprised of the 6A7's cathode, control grid, and screen grid. These elements ...Radioroslyn — 10:33 AM
Philco 42-345 Restoration/Repair
Hi OSanders, First off, welcome to the Philco Phorum where Phine Phamily-Phriendly Pholks Phull of Philco Phacts and P...MrFixr55 — 08:41 AM
Philco 42-345 Restoration/Repair
Today I've been reading through the site trying to learn more about this radio. I also soldered the lose power cord cabl...osanders0311 — 08:24 PM
Philco 610B oscillator wiring
Thanks David! I do have that same later prodution model 610 schematic. I've also studied the Philco service bulletins fo...Tubester — 08:12 PM
Philco 610B oscillator wiring
Some info from Beitmans says late production. David   David — 06:06 PM
Restoring Philco 96
Oh wow! Just found this thread.  Brings me back to early days on this phorum.  I did a 96 back in 2017.  Thread here: ...rfeenstra — 06:05 PM

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

>