Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

marconi 157
#67

(11-25-2016, 02:09 AM)Arran Wrote:   Capacitor C39, a .1 mf cap, is another to check, it should be connected to a 20,000 Ohm resistor and one of the tube socket terminals, with the other end grounded. Capacitor C30 is another, it's a .01 mf cap, it's connected between the oscillator coils and a 50,000 Ohm resistor, and ground. One thing that does not help on Canadian Marconi schematics is that they do not number or label the terminals on the tube sockets, many manufacturers will mark these out with a ring of circles around the tube diagram, with a letter to indicate what element is what like "K" for cathode, "P" for plate, etc. in each circle, it's rather annoying.
Regards
Arran
right what I believe to be c-39 is connected to pin4 of tube 6k7 which also has a 27 k resistor connected to it which should be the 20k resistor and the other end is connected to pin 7 of tube 6k7 which is wrong correct or not


Messages In This Thread
marconi 157 - by the picker - 11-19-2016, 11:00 AM
RE: marconi 157 - by Phlogiston - 11-19-2016, 11:51 AM
RE: marconi 157 - by the picker - 11-19-2016, 01:57 PM
RE: marconi 157 - by Phlogiston - 11-19-2016, 02:22 PM
RE: marconi 157 - by morzh - 11-19-2016, 12:47 PM
RE: marconi 157 - by the picker - 11-19-2016, 01:59 PM
RE: marconi 157 - by KCMike - 11-19-2016, 02:29 PM
RE: marconi 157 - by morzh - 11-19-2016, 03:25 PM
RE: marconi 157 - by the picker - 11-19-2016, 03:42 PM
RE: marconi 157 - by sam - 11-19-2016, 04:21 PM
RE: marconi 157 - by the picker - 11-19-2016, 04:29 PM
RE: marconi 157 - by sam - 11-19-2016, 05:07 PM
RE: marconi 157 - by the picker - 11-19-2016, 05:11 PM
RE: marconi 157 - by Phlogiston - 11-19-2016, 09:56 PM
RE: marconi 157 - by the picker - 11-20-2016, 08:20 AM
RE: marconi 157 - by Radioroslyn - 11-19-2016, 11:41 PM
RE: marconi 157 - by Arran - 11-20-2016, 06:08 AM
RE: marconi 157 - by the picker - 11-20-2016, 08:46 AM
RE: marconi 157 - by the picker - 11-20-2016, 08:11 AM
RE: marconi 157 - by morzh - 11-20-2016, 10:55 AM
RE: marconi 157 - by the picker - 11-20-2016, 05:03 PM
RE: marconi 157 - by the picker - 11-20-2016, 05:06 PM
RE: marconi 157 - by morzh - 11-20-2016, 07:28 PM
RE: marconi 157 - by the picker - 11-20-2016, 07:48 PM
RE: marconi 157 - by morzh - 11-20-2016, 08:48 PM
RE: marconi 157 - by the picker - 11-21-2016, 06:09 AM
RE: marconi 157 - by the picker - 11-20-2016, 08:53 PM
RE: marconi 157 - by morzh - 11-20-2016, 09:14 PM
RE: marconi 157 - by the picker - 11-21-2016, 06:03 AM
RE: marconi 157 - by the picker - 11-21-2016, 06:04 AM
RE: marconi 157 - by morzh - 11-21-2016, 08:46 AM
RE: marconi 157 - by the picker - 11-21-2016, 01:35 PM
RE: marconi 157 - by sam - 11-21-2016, 12:41 PM
RE: marconi 157 - by sam - 11-21-2016, 02:12 PM
RE: marconi 157 - by the picker - 11-21-2016, 07:05 PM
RE: marconi 157 - by the picker - 11-21-2016, 02:20 PM
RE: marconi 157 - by the picker - 11-21-2016, 05:41 PM
RE: marconi 157 - by Arran - 11-22-2016, 06:57 AM
RE: marconi 157 - by the picker - 11-22-2016, 04:43 PM
RE: marconi 157 - by morzh - 11-22-2016, 05:18 PM
RE: marconi 157 - by the picker - 11-22-2016, 06:24 PM
RE: marconi 157 - by morzh - 11-22-2016, 10:35 PM
RE: marconi 157 - by the picker - 11-23-2016, 05:01 AM
RE: marconi 157 - by morzh - 11-23-2016, 10:58 AM
RE: marconi 157 - by the picker - 11-23-2016, 04:21 PM
RE: marconi 157 - by morzh - 11-23-2016, 05:13 PM
RE: marconi 157 - by the picker - 11-23-2016, 05:55 PM
RE: marconi 157 - by morzh - 11-23-2016, 06:23 PM
RE: marconi 157 - by the picker - 11-23-2016, 06:31 PM
RE: marconi 157 - by morzh - 11-23-2016, 07:28 PM
RE: marconi 157 - by the picker - 11-23-2016, 07:49 PM
RE: marconi 157 - by morzh - 11-23-2016, 08:13 PM
RE: marconi 157 - by the picker - 11-23-2016, 08:17 PM
RE: marconi 157 - by morzh - 11-23-2016, 08:46 PM
RE: marconi 157 - by the picker - 11-23-2016, 09:04 PM
RE: marconi 157 - by morzh - 11-23-2016, 09:27 PM
RE: marconi 157 - by Arran - 11-24-2016, 06:28 AM
RE: marconi 157 - by the picker - 11-24-2016, 05:22 PM
RE: marconi 157 - by morzh - 11-24-2016, 02:58 PM
RE: marconi 157 - by morzh - 11-24-2016, 06:03 PM
RE: marconi 157 - by the picker - 11-25-2016, 09:10 AM
RE: marconi 157 - by the picker - 11-25-2016, 09:12 AM
RE: marconi 157 - by Arran - 11-25-2016, 02:09 AM
RE: marconi 157 - by the picker - 11-25-2016, 01:53 PM
RE: marconi 157 - by morzh - 11-25-2016, 12:32 PM
RE: marconi 157 - by morzh - 11-25-2016, 12:40 PM
RE: marconi 157 - by the picker - 11-25-2016, 01:24 PM
RE: marconi 157 - by the picker - 11-26-2016, 08:37 AM
RE: marconi 157 - by the picker - 11-26-2016, 01:54 PM
RE: marconi 157 - by Phlogiston - 11-26-2016, 02:13 PM
RE: marconi 157 - by the picker - 11-26-2016, 02:40 PM
RE: marconi 157 - by Phlogiston - 11-26-2016, 02:50 PM
RE: marconi 157 - by the picker - 11-26-2016, 03:07 PM
RE: marconi 157 - by Phlogiston - 11-26-2016, 03:39 PM
RE: marconi 157 - by the picker - 11-26-2016, 03:38 PM
RE: marconi 157 - by the picker - 11-26-2016, 04:03 PM
RE: marconi 157 - by Phlogiston - 11-26-2016, 05:38 PM
RE: marconi 157 - by the picker - 11-26-2016, 06:17 PM
RE: marconi 157 - by Phlogiston - 11-26-2016, 10:41 PM
RE: marconi 157 - by the picker - 11-27-2016, 07:09 AM
RE: marconi 157 - by the picker - 11-27-2016, 07:54 AM
RE: marconi 157 - by KCMike - 11-27-2016, 10:54 AM
RE: marconi 157 - by the picker - 11-27-2016, 11:15 AM
RE: marconi 157 - by KCMike - 11-27-2016, 12:02 PM
RE: marconi 157 - by the picker - 11-27-2016, 12:09 PM
RE: marconi 157 - by KCMike - 11-27-2016, 12:35 PM
RE: marconi 157 - by the picker - 11-27-2016, 01:11 PM
RE: marconi 157 - by KCMike - 11-27-2016, 02:10 PM
RE: marconi 157 - by the picker - 11-27-2016, 02:41 PM
RE: marconi 157 - by KCMike - 11-27-2016, 10:39 PM
RE: marconi 157 - by the picker - 11-28-2016, 04:53 AM
RE: marconi 157 - by the picker - 11-28-2016, 05:47 PM
RE: marconi 157 - by morzh - 11-28-2016, 06:33 PM
RE: marconi 157 - by the picker - 11-28-2016, 06:53 PM
RE: marconi 157 - by morzh - 11-28-2016, 09:26 PM
RE: marconi 157 - by the picker - 12-02-2016, 02:48 PM
RE: marconi 157 - by the picker - 12-08-2016, 07:06 PM
RE: marconi 157 - by morzh - 12-08-2016, 07:29 PM
RE: marconi 157 - by the picker - 12-08-2016, 07:41 PM
RE: marconi 157 - by BrendaAnnD - 12-08-2016, 08:28 PM
RE: marconi 157 - by the picker - 12-08-2016, 09:24 PM
RE: marconi 157 - by the picker - 12-09-2016, 06:33 PM
RE: marconi 157 - by morzh - 12-08-2016, 08:48 PM
RE: marconi 157 - by the picker - 12-08-2016, 09:25 PM
RE: marconi 157 - by Arran - 12-10-2016, 05:35 AM
RE: marconi 157 - by morzh - 12-08-2016, 09:47 PM
RE: marconi 157 - by the picker - 12-09-2016, 05:23 AM
RE: marconi 157 - by Kenneth F. Besso Jr. - 12-09-2016, 06:18 PM
RE: marconi 157 - by the picker - 12-09-2016, 06:34 PM
RE: marconi 157 - by the picker - 12-10-2016, 06:33 AM
RE: marconi 157 - by Kenneth F. Besso Jr. - 12-10-2016, 10:14 PM
RE: marconi 157 - by the picker - 12-19-2016, 07:21 AM
RE: marconi 157 - by morzh - 12-19-2016, 09:07 AM
RE: marconi 157 - by the picker - 12-21-2016, 07:09 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
HiFi (Chifi) tube amp build - but my own design.
It's the other forum. I'm also in DIY, but mostly read there. Honestly, I kinda jumped into this without much thought to...TV MAN — 10:43 AM
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same.  I find myself wanting to find some way to block out the...glyphmon — 12:03 AM
54C Complete Teardown/Rebuild
Hello roy, here is a link to the schematic . Sincerely Richardradiorich — 11:54 PM
54C Complete Teardown/Rebuild
Richard, The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM
Preliminary work on wife's Silvertone 2014
Did an alignment today which was interesting.  IF alignment went great, almost all was already spot-on.  Adjusting on th...glyphmon — 11:35 PM
54C Complete Teardown/Rebuild
The main problem with adding a Bluetooth input is that this set lacks a traditional power transformer to isolate it from...radiorich — 11:19 PM
54C Cabinet Refinish
I started stripping this cabinet before it got super chilly out because I knew I wasn't going to be able to work on ...glyphmon — 11:18 PM

[-]
Who's Online
There are currently 1543 online users. [Complete List]
» 1 Member(s) | 1542 Guest(s)
Avatar

>