1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

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

Threaded Mode
Philco 40-180 Volume
gdolph
Junior Member
**
Posts: 12
Threads: 1
Joined: Aug 2022
City: Calgary State, Province, Country: Alberta
#1

10-24-2022, 06:45 PM
I have a couple of Philco Model 40-180s that I have been working on. Both have been recapped and out-of-spec resistors replaced. My problem is that the maximum volume on both is not as loud as I would like. When I touch the top of the converter tube 6J8G (shows up as 7J7 in any schematic, as per production change run 4), volume improves dramatically for both. Any thoughts on what is causing this and how to make this volume improvement permanent?


Attached Files Image(s)
   
Find
Radioroslyn
Phorum Expert
*****
Posts: 7,301
Threads: 269
Joined: Dec 2009
City: Roslyn Pa
#2

10-24-2022, 08:17 PM
Hi and welcome to the Phorum,

I would check #13 the plate choke for the rf amp isn't open and that the loop ant is connected properly.

Here's the Philco service info for your set. https://philcoradio.com/library/download...20Book.pdf

GL
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
(This post was last modified: 10-24-2022, 08:23 PM by Radioroslyn.)
Find
radiorich
Super Moderator
******
Posts: 1,869
Threads: 120
Joined: May 2008
City: Omak State, Province, Country: WA
#3

10-24-2022, 08:24 PM
Hello gdolph,
welcome aboard and I agree with terry and I would also Add they might need some alighment too !

Sincerely Richard
Find
morzh
Odobenus rosmarus
******
Posts: 16,511
Threads: 572
Joined: Oct 2011
City: Jackson State, Province, Country: NJ
#4

10-24-2022, 09:29 PM
I will second...third Terry's suggestion. Very typical symptom.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
Find
« Next Oldest | Next Newest »
Thread Closed




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Electrolytic restuffing/internals
Did as suggested. Cut can with hacksaw, removed internals, attached new 8mf cap - with ample use of cardboard and elec...bridkarl — 03:36 PM
The list of my radio & TV collection!
For fans of antique radio... My new video... How to test radio tubes on a Hickok 530B tube tester? Test radio tubes o...RadioSvit — 01:25 PM
philcorepairbench.com - shadow-meter
Thank you Billpoulsbobill — 11:53 AM
philcorepairbench.com - shadow-meter
Hi, Try here Philco Service Hints & Tips, Number 1 It's from the web archive (Way Back Machine).Keith — 10:17 AM
PT-6 finished!!
Hi Arran,  Yes, you are correct, the "nominal" voltage for these Loctal tubes was the same 6.3 or 12.6 V as...MrFixr55 — 07:48 AM
PT-6 finished!!
Actually the Loctal tube series, with number beginning with "14" are 12.6 volt tubes, at 150 ma, I'm not sure ...Arran — 02:14 AM
philco predicta
The model is the holiday without UHF It has no sound and I don't have an oscilloscope or signal generator.cgl18 — 08:51 PM
Philco model 38 code 121 not receiving signal.
I will definitely check my lead length and wire dressing. Thanks for the ideas.Stormlord5500 — 08:06 PM
Philco model 38 code 121 not receiving signal.
Do make sure that you twist the 3 wires from the chassis to the transformer, and dress away from tubes, especially audio...MrFixr55 — 07:38 PM
Philco model 38 code 121 not receiving signal.
The cone unfortunately got damaged when I removed it. The glue that held the cone to the basket was sloppily applied and...Stormlord5500 — 07:12 PM

[-]
Who's Online
There are currently 832 online users. [Complete List]
» 1 Member(s) | 831 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration