Posts: 4,862
Threads: 54
Joined: Sep 2008
City: Sandwick, BC, CA
Low B+ can be caused by bad paper capacitors as well as bad electrolytic capacitors. When a paper capacitor becomes leaky enough it behaves more like a resistor, and with the bypass ones, routed between a plate or screen grid and B- it can load it down quite a bit. If this set had a treble control capacitor across the primary of the output transformer I would also check and replace that capacitor. Philco typically connected those between one end of the output transformer primary and ground, with a resistor in series, even so it should still be replaced. Another fault that this set may have is that the big multi tapped resistor, in series with the B- side, may have a section that opened up, Philco liked using candohm style resistors that were riveted to the chassis, it's very common for those to become open.
Regards
Arran
(This post was last modified: 06-28-2014, 10:29 PM by Arran.)
Messages In This Thread
RE: 41-300x - by Arran - 06-28-2014, 10:23 PM
Users browsing this thread: 1 Guest(s)
|
|
Recent Posts
|
|
Need to purchase some accessories for restoration of my Old Philco Radio
|
| Hi Paulo,
Welcome to the Philco Phorum.
I can see why you want to find good reproduction parts. That is a bea...MrFixr55 — 11:10 PM |
|
HiFi (Chifi) tube amp build - but my own design.
|
| Tim,
I have some bakelite sockets in my work shop that I can dig up. I believe quite a few are NOS. I will take photo...RodB — 10:03 PM |
|
Philco 610B oscillator wiring
|
| > The cathode as noted is wired directly to the ground side of the heater filament for that tube, not to the #17 and ...Radioroslyn — 08:12 PM |
|
HiFi (Chifi) tube amp build - but my own design.
|
| Tim;
I noticed your post a little late, but I would take one of the junk sockets and try to break a chunk out of it wi...Arran — 08:07 PM |
|
Need to purchase some accessories for restoration of my Old Philco Radio
|
| Here is a list of resources found in our online library that you might find useful. Mike's Gobs of Knobs email addres...klondike98 — 01:46 PM |
|
First Radio restoration
|
| Hi Tubeman,
Welcome to the Philco Phorum. Phamily Phriendly Pfun with Phine Pholks Phull of Philco Phacts. (See a p...MrFixr55 — 12:33 PM |
|
First Radio restoration
|
| You could post in the WANTED ADs section here on the Phorum and see if anyone has an RF generator that they want to sell...klondike98 — 11:55 AM |
|
Zenith H725
|
| Good ideas, thank you Arrange and Rich. I have the adhesive aluminum foil already and can try that immediately.
More ...EdHolland — 10:18 AM |
|
Graphics for majestic 1050 dial glass.
|
| Murf;
I found this thread on the ARF, the first photo has a pretty good view of the dial glass.
Regards
ArranArran — 01:12 AM |
|
Zenith H725
|
| hello Ed,
how about that speacial tape used for ducting it's like foil or how about thin piece of
aluminum roof flash...radiorich — 12:19 AM |
|
Who's Online
|
| There are currently no members online. |
|
 
|
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
