Big HEAVY lots of tubes - for 1931
Posts: 2,353
Threads: 92
Joined: May 2010
City: Clayton, NC
In the Marines we would simply cut off the wounded arm/leg and grow another one.
With respect to the filter can, I chose to disconnect/rebuild/re-connect the wires underneath. Chances are the three resistors there need replacing too.
Way out of tolerance resistors seem to be the standard for these period sets. Most of the ones in my 111 were way out of tolerance too....
Posts: 2,118
Threads: 112
Joined: Jun 2010
City: Medford OR (OR what?)
Recaped and recarbonated:
Need to find the 2 .25mf metal box caps to get rid of those yeller ones.
Otherwise, its tuned up and works great.
OH, the 3 tar buckets in the middle also have 250 ohm wire resistors that do not need to be replaced, if you do not break them taking out the .05mf cap.
The big red dog bone and the 2 black wire wound resistors are the only ones that were in spec, other than the 3 mentioned above. This radio was interesting because Philco was still using their own personal color code for resistors with some odd colors.
(This post was last modified: 08-03-2012, 01:21 AM by Phlogiston.)
Posts: 1,703
Threads: 55
Joined: Sep 2005
City: Evanston, IL
I'm sure you guys have seen my easy, quick method?
BAKELITE BLOCK RE-BUILDING
http://www.philcorepairbench.com/capbuild.htm
Chuck
Posts: 2,118
Threads: 112
Joined: Jun 2010
City: Medford OR (OR what?)
Just hit them with a hammer. That stuff will come out.
Posts: 2,118
Threads: 112
Joined: Jun 2010
City: Medford OR (OR what?)
Oh, and for Jerry - The tone cont has 3 caps in it. The schematic does not say what they are. I used .002mf (3) the tone change is slight, which is the way I like it. I never listen to a radio with the tone turned all the way down. But, I suspect the original values were something like .005mf times 3. Since the tone cont sums up these values that is a total of .015mf.
Also - solder in the short run, med and long in that order so you don't burn the insulation.
Starting on the cabinet now.
(This post was last modified: 08-03-2012, 06:36 PM by Phlogiston.)
Posts: 1,562
Threads: 56
Joined: Nov 2008
City: Sedona, AZ/Placentia/CA
Philogiston, Chucks schematics have the values for the tone control. From left to right, .015, .01 and .01.
Jerry
A friend in need is a pest! Bill Slee ca 1970.
Posts: 2,118
Threads: 112
Joined: Jun 2010
City: Medford OR (OR what?)
First coats of lacquer going on the cabinet now.
Posts: 2,118
Threads: 112
Joined: Jun 2010
City: Medford OR (OR what?)
Posts: 2,353
Threads: 92
Joined: May 2010
City: Clayton, NC
Nice!! 
Like the way you have them displayed. Always looking for better ways to fit more radios in the same space.
Posts: 2,118
Threads: 112
Joined: Jun 2010
City: Medford OR (OR what?)
Yes that cabinet displays 22 radios, though I do not have that many in it (yet), including 2 consoles. It is open in the back above the consoles, so displays in both front and back. I designed and built it and the other 5 matching cabinets. I have space for about 4 more similar ones with the consoles on the bottom. The cabinets are very heavy.
And to answer my own earlier question:
You can stack them at least 4 high.
(This post was last modified: 08-17-2012, 11:42 PM by Phlogiston.)
Posts: 1,562
Threads: 56
Joined: Nov 2008
City: Sedona, AZ/Placentia/CA
Phlog, remember, I can't spell that name. Your pics have helped a lot on the big can. One question please, I have identified and replaced two of the three resistors. The small one, brown/green was cut off of one terminal with the attached wire to sub in a .1 cap. I suspect it was
to replace one of the .5 caps. Could you ID the placement of that resistor so I might have a chance to get the wire attached to the proper location?
Not able to identify the resistor by those colors and both ends off (one came off during recaping from the top side). would love to know which terminal of the power block each end goes to. Moving along slowly.
Edit and add.
OK, after taking out the resistor and looking at it, it is marked as a 150K. Measuring about 170K Schematic says 250K. The resistor although old and associated with the replacement of one of the .5 caps from underneath, doesn't really match the style of the other resistors. The connections were also not looking original. Perhaps someone just grabbed something that might have worked. I put back a 250K resistor. Hope that is right. I now know where it goes underneath after looking at a lot of Chuck's documentation. Onward and forward for the time being. Identifying other resistors underneath, most colors don't match anything I have seen. Working with the schematic I'm almost done tagging them with tape and values. Only one I have not figured out yet, but give me some time.
Jerry
A friend in need is a pest! Bill Slee ca 1970.
(This post was last modified: 08-18-2012, 11:55 PM by jerryhawthorne.)
Posts: 2,353
Threads: 92
Joined: May 2010
City: Clayton, NC
Careful, Philco used their own resistor color code on these early sets.
Users browsing this thread: 1 Guest(s)
|
|
Recent Posts
|
|
Philco 60 Squealing
|
| I seem to remember eliminating a squeal by changing the IF frequency by a few KHz. Not that you should put too much tru...fenbach — 08:48 PM |
|
Philco 42-390, code 121 speaker
|
| These speakers pop up on eBay regularly, even if at bloated prices.
Honestly, have not seen many parts on swapmeets.morzh — 08:38 PM |
|
Philco 38-7 Speaker
|
| The put-put is not like the speaker problem.morzh — 08:29 PM |
|
Mission Bell Model 19A Car Radio
|
| Hello everyone,
As mentioned in my last post I was going to see if the vibrator / rectifier section could be persuaded...Antipodal — 08:21 PM |
|
Philco 60 Squealing
|
|
Wondering if I did it backwards.
If a coil was wound backwards, the oscillator would not work at all.
Old school...Chas — 07:23 PM |
|
Philco 38-7 Speaker
|
| 4-ohm speaker. Black, Green leads.tludka — 07:00 PM |
|
Philco 42-390, code 121 speaker
|
| #87 on the schematic.
This radio had a 8" Zenith speaker attached to it when I got it. I do don't know the hist...Stevelog — 06:39 PM |
|
Philco 60 Squealing
|
| I'm pretty sure I now have the litz wire soldered. This did not make any difference. Back in April I rewound the seconda...dconant — 06:25 PM |
|
Philco 38-7 Speaker
|
| Just to make sure, you chose either 4 ohm into 5K or into 10K? (blk-org or blk-grn)morzh — 06:23 PM |
|
Philco 38-7 Speaker
|
| I have let this one sit because of other duties. Now I am back, and I have a couple of questions. I hooked up a Hammond ...tludka — 05:34 PM |
|
Who's Online
|
There are currently 4831 online users. [Complete List]
» 1 Member(s) | 4830 Guest(s)
|
|
|
|
 
|
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
