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

Newbie with Electrolytic Problem
#1

I am a newbie working on a Westinghouse 430A. I want to replace this radios electrolytics before I do anything else. This radio originally was built with a 10 mfd and a 16 mfd electrolytic. 

The original 10 mfd was replaced at some time with a Sprague capacitor containing 2 - 10 mfd's and the 16 mfd cap is original. The Sprague has one yellow wire connected to the base of the existing 16 mfd cap the other yellow wire going to a terminal strip. This cap is grounded to the chassis.

The original 16 mfd cap has that yellow wire from the Sprague attached to it's base as well as two red wires. One red goes to the rectifier tube, and other red wire going to the same terminal strip as the Sprague, but a different lug.

I'm enclosing a photo of the Sprague cap and the original 16 mfd aluminum cap. Also a shot of where they are connected to the terminal strip. 

Unfortunately at this time my ability to follow schematics is poor and I'm not sure whether the previous work on this radio's electrolytics was done properly. 

I need some guidance as the where the + and - connections of my new caps need to go to ensure proper polarity. 

Any assistance would be greatly appreciated.


Attached Files Image(s)
       


Messages In This Thread
Newbie with Electrolytic Problem - by bobclausen - 12-17-2020, 06:11 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 42-345 Restoration/Repair
Hi OSanders, Look carefully at the band switch. Turn it slowly and "wiggle" it around the desired band. ...MrFixr55 — 12:33 AM
5U4 vs 5Z4 tubes
I think that RCA and GE introduced metal tubes in the USA in 1936.  I don't know if they were being made by RCA, GE or b...MrFixr55 — 11:20 PM
Philco 42-345 Restoration/Repair
Vlad95, Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM
5U4 vs 5Z4 tubes
A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM
Philco 42-345 Restoration/Repair
Thanks Rod, "When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM
Philco 42-345 Restoration/Repair
RodB :beerchug:Vlad95 — 10:22 AM
Philco 42-345 Restoration/Repair
Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM
5U4 vs 5Z4 tubes
Well this is a Hallicrafters SX/9 circa 1936. No real issues so far although I dodged a real bullet with a cap that was...bridkarl — 07:59 AM
5U4 vs 5Z4 tubes
The pinout is the same but the 5U4 has a 3 amp filament, verses 2 amps or less on the 5Z4. I think that the pinout of a ...Arran — 12:04 AM
Philco 42-345 Restoration/Repair
By the way. osanders0311 Take a look here: Dial cord stringing Guides May be here you can fount correct string settin...Vlad95 — 11:15 PM

[-]
Who's Online
There are currently 1350 online users. [Complete List]
» 1 Member(s) | 1349 Guest(s)
Avatar

>