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

Thread Closed

Philco 90 Restoration
#29

I installed two 4.7uf film capacitors in the other can to be used as the input filter. I then sprayed a coat of lacquer on cans and installed them in the chassis.

[Image: https://live.staticflickr.com/65535/4921...b6bc_k.jpg]100_0192 by Steve Davis, on Flickr

After one more good looking over, I'm ready for the "Smoke Test". I hooked up the speaker and brought it up slowly.
[Image: https://live.staticflickr.com/65535/4921...9ba0_k.jpg]100_0194 by Steve Davis, on Flickr

Oh no, I have a problem! The screen grid on one of the 47s is glowing bright orange! I quickly turned the radio off. Now, this is what happens when you get old. I bought this speaker on eBay and for some reason, I forgot to test it! One half of the primary of the output transformer is open. The speaker is not correct for this chassis anyway. This one is for an early 90 but, there is almost no hope of finding a speaker for a late 90. I will probably wind up buying universal replacement transformer. So for now, I pulled the speaker out of my Philco 20 as it is the only P-P speaker that I have that has the correct field coil resistance. So I try again. Wow! Its talking! I'm surprised, I figured the alignment would be so far off (remember I had the tuning condenser completely apart)  that it wouldn't pick up anything but, I have three or four stations coming in weakly. Maybe tomorrow evening I will have time to do the alignment.

Steve

M R Radios   C M Tubes


Messages In This Thread
Philco 90 Restoration - by Steve Davis - 12-03-2019, 01:15 PM
RE: Philco 90 Restoration - by Steve Davis - 12-03-2019, 07:10 PM
RE: Philco 90 Restoration - by KCMike - 12-03-2019, 08:11 PM
RE: Philco 90 Restoration - by Ron Ramirez - 12-03-2019, 10:31 PM
RE: Philco 90 Restoration - by rfeenstra - 12-03-2019, 10:43 PM
RE: Philco 90 Restoration - by Steve Davis - 12-03-2019, 10:58 PM
RE: Philco 90 Restoration - by jake wells - 12-03-2019, 11:19 PM
RE: Philco 90 Restoration - by rfeenstra - 12-03-2019, 11:32 PM
RE: Philco 90 Restoration - by Steve Davis - 12-03-2019, 11:37 PM
RE: Philco 90 Restoration - by jake wells - 12-04-2019, 07:26 AM
RE: Philco 90 Restoration - by Steve Davis - 12-04-2019, 09:57 AM
RE: Philco 90 Restoration - by Steve Davis - 12-04-2019, 07:03 PM
RE: Philco 90 Restoration - by Steve Davis - 12-04-2019, 07:20 PM
RE: Philco 90 Restoration - by jake wells - 12-04-2019, 07:21 PM
RE: Philco 90 Restoration - by Steve Davis - 12-05-2019, 02:49 PM
RE: Philco 90 Restoration - by jake wells - 12-05-2019, 05:18 PM
RE: Philco 90 Restoration - by Steve Davis - 12-05-2019, 09:44 PM
RE: Philco 90 Restoration - by jake wells - 12-05-2019, 10:27 PM
RE: Philco 90 Restoration - by Steve Davis - 12-11-2019, 02:41 PM
RE: Philco 90 Restoration - by Jake Blake - 12-11-2019, 03:06 PM
RE: Philco 90 Restoration - by Steve Davis - 12-11-2019, 03:36 PM
RE: Philco 90 Restoration - by Jake Blake - 12-11-2019, 03:39 PM
RE: Philco 90 Restoration - by Steve Davis - 12-11-2019, 04:12 PM
RE: Philco 90 Restoration - by Steve Davis - 12-11-2019, 11:16 PM
RE: Philco 90 Restoration - by Steve Davis - 12-11-2019, 11:31 PM
RE: Philco 90 Restoration - by 462ron - 12-12-2019, 08:48 AM
RE: Philco 90 Restoration - by Steve Davis - 12-12-2019, 11:43 AM
RE: Philco 90 Restoration - by Kestas - 12-12-2019, 03:34 PM
RE: Philco 90 Restoration - by Steve Davis - 12-13-2019, 10:14 PM
RE: Philco 90 Restoration - by Jake Blake - 12-13-2019, 10:24 PM
RE: Philco 90 Restoration - by Ron Ramirez - 12-13-2019, 10:26 PM
RE: Philco 90 Restoration - by Ron Ramirez - 12-13-2019, 10:27 PM
RE: Philco 90 Restoration - by Jake Blake - 12-13-2019, 10:29 PM
RE: Philco 90 Restoration - by Steve Davis - 12-13-2019, 10:55 PM
RE: Philco 90 Restoration - by Steve Davis - 12-16-2019, 11:03 PM
RE: Philco 90 Restoration - by Steve Davis - 12-19-2019, 01:32 PM
RE: Philco 90 Restoration - by Steve Davis - 12-19-2019, 05:01 PM
RE: Philco 90 Restoration - by rfeenstra - 12-19-2019, 05:23 PM
RE: Philco 90 Restoration - by Steve Davis - 12-19-2019, 05:47 PM
RE: Philco 90 Restoration - by Steve Davis - 12-19-2019, 06:17 PM
RE: Philco 90 Restoration - by Steve Davis - 12-19-2019, 07:26 PM
RE: Philco 90 Restoration - by Phlogiston - 12-19-2019, 07:33 PM
RE: Philco 90 Restoration - by Steve Davis - 12-19-2019, 07:56 PM
RE: Philco 90 Restoration - by Steve Davis - 12-24-2019, 11:59 AM
RE: Philco 90 Restoration - by morzh - 12-24-2019, 12:15 PM
RE: Philco 90 Restoration - by rfeenstra - 12-24-2019, 01:07 PM
RE: Philco 90 Restoration - by Steve Davis - 12-24-2019, 02:51 PM
RE: Philco 90 Restoration - by rfeenstra - 12-30-2019, 05:58 PM
RE: Philco 90 Restoration - by Steve Davis - 12-30-2019, 11:40 PM
RE: Philco 90 Restoration - by Steve Davis - 01-03-2020, 09:03 PM
RE: Philco 90 Restoration - by Simon Wa3uay - 01-03-2020, 09:07 PM
RE: Philco 90 Restoration - by Jake Blake - 01-03-2020, 10:32 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
54C Complete Teardown/Rebuild
While I'm waiting to wrap up the final steps on my wife's Silvertone 2014, I started disassembly on the next project.  O...glyphmon — 11:07 PM
Preliminary work on wife's Silvertone 2014
Hello roy, that great news glad it worked out for you !! Sincerely Richardradiorich — 10:50 PM

[-]
Who's Online
There are currently 1344 online users. [Complete List]
» 2 Member(s) | 1342 Guest(s)
AvatarAvatar

>