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

Thread Closed

Philco 16X restoration
#34

I thought I did not have 78 tubes.
Also I realized one of the 78 tubes was replaced with a 77 one.
When I damaged one 78 in the beginning, I thought I did not have any in stock and now I even thought of buying some. Then I looked at my bench plastic bins, and I have a whole bin-full of them.
So I picked three that tested like new.

Also on the photo you could see a 77 tube's (the one right under the two IF cans) grid wire is outside the shell; I am sure it should be inside.

So I put all the tubes in, made sure it started rectifying at about 50VAC, and then went to 110VAC.
There was hum in the speaker and it reacted to the volume pot wiper being touched.
I could hear aerial noise, but rotating the tuning cap at where the local station is did not result in reception, so I will have to look at the RF circuit.
But so far no smoke and AF working is a good sign.


PS. Of course it works. I came down to see why there is no reception and then it occur to me to check the band switch posiition. Sur'nuff, it was on some SW band. Put in the BC position, the radio clearly receives the local station.

PPS. Putting the heat shield to the wire-wound resistor in the back proved to be a bit of a challenge. When taking that off I did not feel like taking the resistor out, so I bent a side. Putting it back was not possible without taking the resistor out, so I straightened the bent side, took the resistor out and then the insulating washer that is in between the holder and the resistor's end (probably to stress-relieve the ceramic) disintegrated, having been burnt over the years. And I do not have a fibre washer in the house. So I searched far and wide and found a fibre bushing which was exactly the right size and the internal diameter, so I saw off a piece to make a washer, and then spent some 15 minutes hand-sanding it to the right thickness. Eventually it went in. So the under-chassis is done.

I turned the speaker towards myself when playing (the cone facing the bench top obviously affects the sound) and was pleasantly surprise by a good clean base.

Now to alignment.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.


Messages In This Thread
Philco 16X restoration - by morzh - 10-02-2021, 06:15 PM
RE: Philco 16X restoration - by Radioroslyn - 10-02-2021, 10:48 PM
RE: Philco 16X restoration - by morzh - 10-02-2021, 10:59 PM
RE: Philco 16X restoration - by Ron Ramirez - 10-02-2021, 11:26 PM
RE: Philco 16X restoration - by Radioroslyn - 10-03-2021, 07:22 AM
RE: Philco 16X restoration - by morzh - 10-04-2021, 02:48 PM
RE: Philco 16X restoration - by morzh - 10-10-2021, 07:11 PM
RE: Philco 16X restoration - by RodB - 10-11-2021, 09:25 AM
RE: Philco 16X restoration - by Ron Ramirez - 10-11-2021, 09:32 AM
RE: Philco 16X restoration - by Ron Ramirez - 10-12-2021, 06:58 PM
RE: Philco 16X restoration - by mikethedruid - 10-13-2021, 12:02 AM
RE: Philco 16X restoration - by morzh - 10-19-2021, 06:16 PM
RE: Philco 16X restoration - by morzh - 10-25-2021, 10:15 PM
RE: Philco 16X restoration - by Ron Ramirez - 10-26-2021, 06:18 AM
RE: Philco 16X restoration - by morzh - 10-26-2021, 01:06 PM
RE: Philco 16X restoration - by morzh - 10-30-2021, 10:49 PM
RE: Philco 16X restoration - by morzh - 10-31-2021, 04:42 PM
RE: Philco 16X restoration - by morzh - 10-31-2021, 04:52 PM
RE: Philco 16X restoration - by David - 11-01-2021, 09:23 AM
RE: Philco 16X restoration - by morzh - 11-06-2021, 07:20 PM
RE: Philco 16X restoration - by Brad Winder - 11-06-2021, 08:45 PM
RE: Philco 16X restoration - by morzh - 11-06-2021, 09:51 PM
RE: Philco 16X restoration - by morzh - 11-12-2021, 09:05 PM
RE: Philco 16X restoration - by morzh - 11-14-2021, 03:23 PM
RE: Philco 16X restoration - by morzh - 11-17-2021, 12:00 AM
RE: Philco 16X restoration - by morzh - 11-18-2021, 12:31 AM
RE: Philco 16X restoration - by morzh - 11-21-2021, 11:00 PM
RE: Philco 16X restoration - by Brad Winder - 11-22-2021, 12:39 AM
RE: Philco 16X restoration - by mikethedruid - 11-22-2021, 05:29 AM
RE: Philco 16X restoration - by Ron Ramirez - 11-22-2021, 09:13 AM
RE: Philco 16X restoration - by morzh - 11-22-2021, 12:39 PM
RE: Philco 16X restoration - by morzh - 11-22-2021, 10:57 PM
RE: Philco 16X restoration - by morzh - 11-26-2021, 11:46 PM
RE: Philco 16X restoration - by morzh - 11-27-2021, 05:07 PM
RE: Philco 16X restoration - by morzh - 11-28-2021, 09:30 PM
RE: Philco 16X restoration - by Simon Wa3uay - 11-29-2021, 01:24 PM
RE: Philco 16X restoration - by morzh - 11-29-2021, 02:11 PM
RE: Philco 16X restoration - by morzh - 11-30-2021, 04:56 PM
RE: Philco 16X restoration - by morzh - 12-04-2021, 03:41 PM
RE: Philco 16X restoration - by morzh - 12-05-2021, 09:52 PM
RE: Philco 16X restoration - by morzh - 12-08-2021, 09:30 PM
RE: Philco 16X restoration - by morzh - 12-09-2021, 08:05 PM
RE: Philco 16X restoration - by morzh - 01-01-2022, 05:18 PM
RE: Philco 16X restoration - by Radioroslyn - 01-01-2022, 10:18 PM
RE: Philco 16X restoration - by morzh - 01-01-2022, 11:10 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
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
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

[-]
Who's Online
There are currently 2153 online users. [Complete List]
» 2 Member(s) | 2151 Guest(s)
AvatarAvatar

>