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

38-10 tuner subassembly and Temp Speaker Question
#16

Here's what the original capacitors look like in case you'd like to restore yours to the original "look". I just disconnected them and mounted the much smaller replacements under the chassis as Texasrocker suggested. I've seen these old capacitors on eBay now and then.

[Image: http://farm4.static.flickr.com/3174/3094...576c0a.jpg]
#17

I generally restuff those aluminum can electrolytics these days - makes for a much neater job. Icon_smile

--
Ron Ramirez
Ferdinand IN
#18

While the wire wound resistor will work my preference is to use a filter choke as a substitute, used or NOS ones can usually be found at ham fests inexpensively, one can also find output transformers at the same, the choke can be mounted to the speaker frame and it will keep the chassis itself more or less factory correct. If and when you find the correct speaker it's an easy task to change over, especially if the speaker has a plug and socket. Filter chokes do not produce heat and I have found that they also filter hum better then a Pi filter arrangement. Radio Daze also stocks Hammond replacements so you could order one of those along with an output transformer. There is a way to build a solid state substitute for the filter choke, but I don't like using solid state in tube equipment unless I have no other choice, nothing wrong with this from an engineering standpoint but it bothers me from a historical one.
Best Regards
Arran




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
PT 6 chassis screws size???
Have this done except for missing chassis screws. It looks like 1 inch 6/32 sheet metal screw may work but can anyone s...bridkarl — 10:32 PM
Philco model 38 code 121 not receiving signal.
Hello Stormlord, Well done on rewinding that coil it turned fairly good for your first one. Sincerely Richardradiorich — 09:12 PM
Philco model 38 code 121 not receiving signal.
Well here it is. It ain't pretty, but hopefully it'll work. I checked it with my DMM on continuity and it keeps and r...Stormlord5500 — 08:56 PM
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM
Philco model 38 code 121 not receiving signal.
Well why not! :lol:Stormlord5500 — 03:14 PM

[-]
Who's Online
There are currently 951 online users. [Complete List]
» 2 Member(s) | 949 Guest(s)
AvatarAvatar

>