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

Thread Closed

Need help restoring my 40-180 - SUCCESS
#68

Eric, good that your 100w light does not light with the 84 tube. As Mike said, a variac is also very handy but the light will tell you a bit about current draw.
A long post, I would check your two e-caps to make certain the are wired correctly. Item 61 the 12mfd should have it's negative going to the center tap of the high voltage secondary on the power transformer. Item 58, the 16mfd should go to chassis.
Set off, take a resistance measurement from the cathode of the rectifier (+ of the 12mfd) to ground. Negative lead on your meter to ground. Give it a minute to stabilize and report back.
Seems something is putting a load on the power transformer, hence blowing the fuse. The 1 amp fuse should provide enough overhead for the 60 watt radio even on start up which will be a bit higher.
Let us hear back on your resistance measurement and cap checking.

Jerry

A friend in need is a pest!  Bill Slee ca 1970.


Messages In This Thread
RE: Need help restoring my 40-180 - by marty - 08-26-2013, 02:12 PM
RE: Need help restoring my 40-180 - by EricS - 08-26-2013, 02:33 PM
RE: Need help restoring my 40-180 - by klondike98 - 08-26-2013, 02:42 PM
RE: Need help restoring my 40-180 - by EricS - 08-26-2013, 02:48 PM
RE: Need help restoring my 40-180 - by marty - 08-26-2013, 03:04 PM
RE: Need help restoring my 40-180 - by EricS - 08-26-2013, 09:46 PM
RE: Need help restoring my 40-180 - by EricS - 08-27-2013, 08:50 AM
RE: Need help restoring my 40-180 - by marty - 08-27-2013, 10:08 AM
RE: Need help restoring my 40-180 - by EricS - 08-27-2013, 10:56 AM
RE: Need help restoring my 40-180 - by Jamie - 08-27-2013, 03:16 PM
RE: Need help restoring my 40-180 - by codefox1 - 08-27-2013, 06:25 PM
RE: Need help restoring my 40-180 - by marty - 08-27-2013, 07:43 PM
RE: Need help restoring my 40-180 - by marty - 08-27-2013, 08:55 PM
RE: Need help restoring my 40-180 - by EricS - 08-27-2013, 10:45 PM
RE: Need help restoring my 40-180 - by EricS - 08-28-2013, 06:53 PM
RE: Need help restoring my 40-180 - by marty - 08-28-2013, 07:00 PM
RE: Need help restoring my 40-180 - by Raleigh - 08-28-2013, 07:37 PM
RE: Need help restoring my 40-180 - by EricS - 08-29-2013, 09:47 PM
RE: Need help restoring my 40-180 - by marty - 08-29-2013, 10:23 PM
RE: Need help restoring my 40-180 - by EricS - 09-08-2013, 08:33 PM
RE: Need help restoring my 40-180 - by TA Forbes - 09-08-2013, 08:52 PM
RE: Need help restoring my 40-180 - by EricS - 09-08-2013, 08:58 PM
RE: Need help restoring my 40-180 - by EricS - 09-08-2013, 09:44 PM
RE: Need help restoring my 40-180 - by EricS - 09-09-2013, 08:29 AM
RE: Need help restoring my 40-180 - by morzh - 09-11-2013, 10:22 PM
RE: Need help restoring my 40-180 - by BrendaAnnD - 09-12-2013, 12:35 AM
RE: Need help restoring my 40-180 - by BrendaAnnD - 09-13-2013, 04:51 AM
RE: Need help restoring my 40-180 - by BrendaAnnD - 09-13-2013, 12:19 PM
RE: Need help restoring my 40-180 - by EricS - 09-20-2013, 11:41 PM
RE: Need help restoring my 40-180 - by EricS - 10-11-2013, 07:32 PM
RE: Need help restoring my 40-180 - by Jamie - 10-11-2013, 08:00 PM
RE: Need help restoring my 40-180 - by EricS - 10-13-2013, 07:25 PM
RE: Need help restoring my 40-180 - by EricS - 10-23-2013, 09:28 PM
RE: Need help restoring my 40-180 - by DeckApe - 10-28-2013, 06:11 PM
RE: Need help restoring my 40-180 - by EricS - 10-28-2013, 10:17 PM
RE: Need help restoring my 40-180 - by DeckApe - 11-21-2013, 01:19 PM
RE: Need help restoring my 40-180 - by EricS - 08-10-2014, 09:04 AM
RE: Need help restoring my 40-180 - by murf - 08-10-2014, 09:41 AM
RE: Need help restoring my 40-180 - by murf - 08-10-2014, 09:57 AM
RE: Need help restoring my 40-180 - by morzh - 08-10-2014, 11:51 AM
RE: Need help restoring my 40-180 - by EricS - 08-10-2014, 04:09 PM
RE: Need help restoring my 40-180 - by morzh - 08-10-2014, 04:13 PM
RE: Need help restoring my 40-180 - by jerryhawthorne - 08-10-2014, 05:38 PM
RE: Need help restoring my 40-180 - by EricS - 08-10-2014, 10:10 PM
RE: Need help restoring my 40-180 - by morzh - 08-10-2014, 10:18 PM
RE: Need help restoring my 40-180 - by EricS - 08-10-2014, 11:14 PM
RE: Need help restoring my 40-180 - by EricS - 08-11-2014, 08:32 AM
RE: Need help restoring my 40-180 - by morzh - 08-11-2014, 09:37 AM
RE: Need help restoring my 40-180 - by EricS - 08-11-2014, 02:54 PM
RE: Need help restoring my 40-180 - by morzh - 08-11-2014, 03:06 PM
RE: Need help restoring my 40-180 - by EricS - 08-11-2014, 03:58 PM
RE: Need help restoring my 40-180 - by morzh - 08-11-2014, 04:09 PM
RE: Need help restoring my 40-180 - by morzh - 08-11-2014, 04:13 PM
RE: Need help restoring my 40-180 - by EricS - 08-21-2014, 09:17 PM
RE: Need help restoring my 40-180 - by morzh - 08-21-2014, 09:40 PM
RE: Need help restoring my 40-180 - by EricS - 08-21-2014, 10:49 PM
RE: Need help restoring my 40-180 - by EricS - 08-22-2014, 08:33 AM
RE: Need help restoring my 40-180 - by EricS - 08-22-2014, 08:50 AM
RE: Need help restoring my 40-180 - by morzh - 08-22-2014, 10:51 AM
RE: Need help restoring my 40-180 - by EricS - 08-22-2014, 06:48 PM
RE: Need help restoring my 40-180 - by morzh - 08-22-2014, 07:11 PM
RE: Need help restoring my 40-180 - by EricS - 08-22-2014, 10:37 PM
RE: Need help restoring my 40-180 - by morzh - 08-22-2014, 10:58 PM
RE: Need help restoring my 40-180 - by EricS - 08-25-2014, 09:01 PM
RE: Need help restoring my 40-180 - by murf - 08-25-2014, 09:48 PM
RE: Need help restoring my 40-180 - by EricS - 08-26-2014, 12:51 PM
RE: Need help restoring my 40-180 - by EricS - 08-28-2014, 09:59 PM



Users browsing this thread: 3 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 no members online.

>