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

Thread Closed

Philco 20 Restoration
#1

I'm really bad in that when working on a project, I sometimes forget to take pictures. I did take some. So here are the high points. I bought this Philco 20 almost a year ago. I did the electronic restoration right away, then set the project aside for several months. The cabinet was in poor condition. As with many of the Philco 20s, the speaker grille was broken and pieces were missing. When the radio came to me, it had a 45 tube and a 50 tube in place of the 71 tubes. The 45 was bad, but the 50 tested very strong. I was able to sell the 50 for the price of the radio, so I only have the cost of shipping in the radio!

Pretty rough cabinet

[Image: https://farm5.staticflickr.com/4751/3856...8ec1_k.jpg]Philco 20 Cabinet by Steve Davis, on Flickr

[Image: https://farm5.staticflickr.com/4695/3856...9ab0_k.jpg]Philco 20 by Steve Davis, on Flickr

[Image: https://farm5.staticflickr.com/4744/3856...a047_k.jpg]Philco 20 Cabinet by Steve Davis, on Flickr

This was a real windfall. A 50 tube in place of one of the 71s

[Image: https://farm5.staticflickr.com/4694/2549...5665_k.jpg]Philco 20 by Steve Davis, on Flickr

The chassis had a couple of modifications done in the past. The blue resistor does not belong.

[Image: https://farm5.staticflickr.com/4624/2549...bd5c_k.jpg]Philco 20 Chassis by Steve Davis, on Flickr


Someone had installed a headphone jack (I cut the wires off before taking the photo). There was no way this could have worked. When the plug is inserted, the jack opened one side of the output transformer to one of the 71 plates. The other 71 would continue to drive the speaker. Also, I just don't like the idea of a pair of headphones wrapped around my head with a couple of hundred volts going through them!

[Image: https://farm5.staticflickr.com/4667/2549...1e0d_z.jpg]Philco 20 Chassis by Steve Davis, on Flickr

More to come

M R Radios   C M Tubes


Messages In This Thread
Philco 20 Restoration - by Steve Davis - 02-26-2018, 11:21 PM
RE: Philco 20 Restoration - by morzh - 02-26-2018, 11:56 PM
RE: Philco 20 Restoration - by Steve Davis - 02-27-2018, 12:44 AM
RE: Philco 20 Restoration - by morzh - 02-27-2018, 12:50 AM
RE: Philco 20 Restoration - by Steve Davis - 02-27-2018, 12:00 PM
RE: Philco 20 Restoration - by Nathan Slingerland - 02-27-2018, 12:03 PM
RE: Philco 20 Restoration - by Steve Davis - 02-27-2018, 12:09 PM
RE: Philco 20 Restoration - by Nathan Slingerland - 02-27-2018, 12:14 PM
RE: Philco 20 Restoration - by Steve Davis - 02-27-2018, 01:08 PM
RE: Philco 20 Restoration - by Steve Davis - 02-27-2018, 09:54 PM
RE: Philco 20 Restoration - by Steve Davis - 03-04-2018, 10:50 AM
RE: Philco 20 Restoration - by morzh - 03-04-2018, 11:16 AM
RE: Philco 20 Restoration - by Steve Davis - 03-04-2018, 11:47 AM
RE: Philco 20 Restoration - by morzh - 03-04-2018, 12:43 PM
RE: Philco 20 Restoration - by Arran - 03-04-2018, 07:43 PM
RE: Philco 20 Restoration - by GarySP - 03-27-2018, 11:39 AM
RE: Philco 20 Restoration - by Steve Davis - 03-27-2018, 06:37 PM
RE: Philco 20 Restoration - by Ron Ramirez - 03-27-2018, 07:07 PM
RE: Philco 20 Restoration - by Steve Davis - 03-27-2018, 07:34 PM
RE: Philco 20 Restoration - by Ron Ramirez - 03-27-2018, 07:55 PM
RE: Philco 20 Restoration - by GarySP - 03-28-2018, 08:39 AM
RE: Philco 20 Restoration - by Steve Davis - 03-28-2018, 06:45 PM
RE: Philco 20 Restoration - by GarySP - 03-29-2018, 08:46 AM
RE: Philco 20 Restoration - by GarySP - 03-31-2018, 02:33 PM
RE: Philco 20 Restoration - by Steve Davis - 04-01-2018, 09:17 AM
RE: Philco 20 Restoration - by mg34.42 - 04-28-2019, 11:27 PM
RE: Philco 20 Restoration - by Radioroslyn - 04-29-2019, 12:41 AM
RE: Philco 20 Restoration - by Ron Ramirez - 05-04-2019, 01:08 PM
RE: Philco 20 Restoration - by Radioroslyn - 05-04-2019, 04:51 PM
RE: Philco 20 Restoration - by GarySP - 05-04-2019, 06:13 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
Preliminary work on wife's Silvertone 2014
Safety caps arrived today.  Soldered one in and had a successful first power-up.  No magic smoke escaped and it tunes in...glyphmon — 09:53 PM

[-]
Who's Online
There are currently no members online.

>