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

Thread Closed

Heirloom 41-250
#30

I've pretty much completed the semi-conductor list for my project. I used the 41-255 parts list as a basis. I have not found any parts discrepancies so far. But I do have a question. In the 255 diagram, part 57, a .003 mfd condensor, goes from the white wire leading to the output transformer (58) and to ground. On the black lead, there is part 68, another .003 mfd. condensor going to ground.

In the 285 diagram, condensor 57 does not go to ground but to the black wire. 68 seems to be eliminated. Could someone please confirm the value of 57 in a 285? Out of curiosity, why the difference? Is there a possibility I should not use this variation due to my using the much smaller speaker from the 250?


Messages In This Thread
Heirloom 41-250 - by MarkBardenwerper - 07-09-2015, 10:48 PM
RE: Heirloom 41-250 - by klondike98 - 07-09-2015, 11:27 PM
RE: Heirloom 41-250 - by MarkBardenwerper - 07-09-2015, 11:35 PM
RE: Heirloom 41-250 - by Ron Ramirez - 07-10-2015, 06:09 AM
RE: Heirloom 41-250 - by lenmiller - 07-10-2015, 12:45 PM
RE: Heirloom 41-250 - by KCMike - 07-10-2015, 02:34 PM
RE: Heirloom 41-250 - by MarkBardenwerper - 07-10-2015, 10:13 PM
RE: Heirloom 41-250 - by MarkBardenwerper - 07-12-2015, 09:46 PM
RE: Heirloom 41-250 - by TA Forbes - 07-13-2015, 01:36 PM
RE: Heirloom 41-250 - by MarkBardenwerper - 07-14-2015, 10:01 PM
RE: Heirloom 41-250 - by MarkBardenwerper - 07-15-2015, 11:26 PM
RE: Heirloom 41-250 - by Arran - 07-16-2015, 04:15 AM
RE: Heirloom 41-250 - by MarkBardenwerper - 07-16-2015, 12:03 AM
RE: Heirloom 41-250 - by klondike98 - 07-16-2015, 01:41 AM
RE: Heirloom 41-250 - by MarkBardenwerper - 07-16-2015, 10:16 PM
RE: Heirloom 41-250 - by Radioroslyn - 07-17-2015, 06:44 AM
RE: Heirloom 41-250 - by MarkBardenwerper - 07-17-2015, 11:29 PM
RE: Heirloom 41-250 - by Radioroslyn - 07-18-2015, 06:56 AM
RE: Heirloom 41-250 - by MarkBardenwerper - 07-19-2015, 01:06 PM
RE: Heirloom 41-250 - by jerryhawthorne - 07-19-2015, 03:20 PM
RE: Heirloom 41-250 - by MarkBardenwerper - 07-19-2015, 09:40 PM
RE: Heirloom 41-250 - by MarkBardenwerper - 07-29-2015, 10:10 PM
RE: Heirloom 41-250 - by Raleigh - 07-29-2015, 11:57 PM
RE: Heirloom 41-250 - by MarkBardenwerper - 07-30-2015, 08:51 AM
RE: Heirloom 41-250 - by Raleigh - 08-01-2015, 04:33 PM
RE: Heirloom 41-250 - by MarkBardenwerper - 08-02-2015, 08:41 AM
RE: Heirloom 41-250 - by MarkBardenwerper - 08-16-2015, 11:03 PM
RE: Heirloom 41-250 - by codefox1 - 08-17-2015, 05:59 PM
RE: Heirloom 41-250 - by MarkBardenwerper - 08-17-2015, 09:24 PM
RE: Heirloom 41-250 - by MarkBardenwerper - 08-17-2015, 11:53 PM
RE: Heirloom 41-250 - by Raleigh - 08-18-2015, 04:35 AM
RE: Heirloom 41-250 - by MarkBardenwerper - 08-18-2015, 08:45 AM
RE: Heirloom 41-250 - by Eliot Ness - 08-18-2015, 09:31 AM
RE: Heirloom 41-250 - by MarkBardenwerper - 09-09-2015, 11:11 PM
RE: Heirloom 41-250 - by MarkBardenwerper - 09-09-2015, 11:26 PM
RE: Heirloom 41-250 - by Mondial - 09-10-2015, 08:19 AM
RE: Heirloom 41-250 - by MarkBardenwerper - 09-10-2015, 08:33 AM



Users browsing this thread: 3 Guest(s)
[-]
Recent Posts
under chassis parts locator diagram for 1938 Zenith 9s262
Has anyone gone to the trouble of creating an under chassis parts locator image?  Yes, I can identify components by foll...bobloney — 08:57 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Try looking at this site the book mark is for a old generator that I was given. David    https://radionerds.com/index.ph...David — 08:36 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Hello Everyone, I am looking for voltage identification for all the pin positions on the socket of a CRV-20130 power su...Tonym4704 — 08:16 PM
Philco P45-6365 Universal Transformer Instruction Manual
Can anyone guide me to where this may be found?GRG — 03:00 PM
54C Complete Teardown/Rebuild
I don't think that I have encountered a 12Z3 before, curious how it uses one of those but includes a #43, which is a 25 ...Arran — 02:17 PM
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

[-]
Who's Online
There are currently 2186 online users. [Complete List]
» 2 Member(s) | 2184 Guest(s)
AvatarAvatar

>