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

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Big HEAVY lots of tubes - for 1931
#16

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....
#17

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.
#18

I'm sure you guys have seen my easy, quick method?

BAKELITE BLOCK RE-BUILDING

http://www.philcorepairbench.com/capbuild.htm

Chuck
#19

Just hit them with a hammer. That stuff will come out.
#20

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.
#21

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.
#22

First coats of lacquer going on the cabinet now.

   
#23

Well it is done and sitting next to it's brother:

   

   

   

   
#24

Nice!!Icon_thumbupIcon_thumbup

Like the way you have them displayed. Always looking for better ways to fit more radios in the same space.
#25

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.
#26

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.
#27

Careful, Philco used their own resistor color code on these early sets.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco Model 38-7: what caps & resistors do fail typically?
Since you stated earlier, you have a console 38-7XX.  They also had a 38-7T (table), and 38-7CS (chairside).  A very nic...GarySP — 01:18 PM
Part numbers to model cross
That I wouldn't know, but sometimes the radio document itself shows one, same as the capacitor cans' etc pinouts.morzh — 12:46 PM
Part numbers to model cross
Thank you morzh, that is exactly what I was looking for. Now , is there some where that shows pinouts for Philco power ...Jim Dutridge — 11:37 AM
Restoration of the Canadian General Electric A-87
Thanks for your help Michael. In fact, this video is only an intermediate result. Later I had to apply another tinting l...RadioSvit — 09:01 AM
Restoration of the Canadian General Electric A-87
Great job on the cabinet. PS. In the US notation, "kenotron" refers to specific type of tubes; we call re...morzh — 08:24 AM
Part numbers to model cross
This document has at least some tables of models and parts used. Example: Choke 32-7572, used in 604 radio. Search f...morzh — 08:19 AM
Restoration of the Canadian General Electric A-87
I also checked all the radio tubes on my Hickok 530 tube tester. The 5Z3 kenotron turned out to be faulty, all the other...RadioSvit — 08:02 AM
Restoration of the Canadian General Electric A-87
Well... While the varnish is drying up, I started repairing the chassis... Of course I started by replacing the pa...RadioSvit — 07:12 AM
Philco Model 38-7: what caps & resistors do fail typically?
Hello Martin, Welcome aboard our little community what great Model 38-7 Sincerely Richardradiorich — 12:30 AM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum Martin. I count about 9 paper caps, the 3 electrolytic caps and 2-Y2 safety caps to replace th...RodB — 09:44 PM

[-]
Who's Online
There are currently 1298 online users. [Complete List]
» 1 Member(s) | 1297 Guest(s)
Avatar

>