Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand
State, Province, Country: Indiana
In May 2012, I acquired a 37-670B from the auction site.
[Image: http://www.philcoradio.com/images/phorum..._00001.jpg]
Later on, I found a better cabinet (38-2670, identical cabinet) and purchased it. I refinished this cabinet two years ago.
[Image: http://www.philcoradio.com/images/phorum..._00006.jpg]
In between then and now, I also managed to acquire two extra chassis. One came from a 37-670 console I bought at Kutztown in 2013 just for the chassis.
It was the Kutztown chassis that I decided to restore, as it seemed to be in better shape than the others.
I started working on it right before this year's fall Kutztown meet, and it is now up and running - more or less.
[Image: http://www.philcoradio.com/images/phorum...-00002.jpg]
[Image: http://www.philcoradio.com/images/phorum...-00003.jpg]
This chassis had many taper-top (ST) tubes installed, so I decided to populate the remaining sockets with ST tubes as well to give it an "original" appearance.
[Image: http://www.philcoradio.com/images/phorum...-00004.jpg]
I even went the "extra mile" and restuffed most of the original paper caps. (Only two that are hidden inside the RF unit were not restuffed.)
[Image: http://www.philcoradio.com/images/phorum...-00005.jpg]
I gave it a quick alignment today, and it works on all five bands!
Now, I said it "more or less" works. As I began alignment today, the set began to make faint crackling and sizzling sounds intermittently, making crackling noises through the speaker in time with the crackling and sizzling.
I suspect one of the two Candohms is failing, as the power transformer does not seem to be getting excessively hot.
So both Candohms will be getting replaced with individual resistors (and terminal strips) soon.
*****
Somehow in our move across town in Fall 2013, I have managed to misplace the speaker board upon which the grille cloth was mounted. If I can't find it, I shall have to make another from mat board. Fortunately, I have some Philco "Ribbed" repro cloth.
--
Ron Ramirez
Ferdinand IN
Posts: 2,570
Threads: 336
Joined: Jun 2013
City: lawrenceville nj
wow ron
that looks all original still nice
see kirk philco
Some day, and that day may never come, I will call upon you to do a service for me. But until that day, accept this justice as a gift
mafiamen2
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand
State, Province, Country: Indiana
Well, I wasn't feeling very well this morning (or yesterday) so I stayed home today.
The resistors I ordered from Mouser to replace the two Candohms in the 37-670 arrived yesterday. So this afternoon, I decided that some time at the workbench - in moderation - might be good therapy.
After some drilling and grinding, the rivets holding the Candohms were removed. Some unsoldering followed, after which the Candohms themselves were removed and tossed into the round file.
Following some more drilling and soldering, here's how things looked underneath:
[Image: http://www.philcoradio.com/images/phorum..._00001.jpg]
The power-up test followed.
Voila, no more snap, crackle, pop or sizzle...
[Image: http://www.philcoradio.com/images/phorum..._00002.jpg]
That 5600 ohm 10 watt ceramic resistor really gets hot! I think I will replace it later with a 25 watt cylindrical ceramic, or a 50 watt chassis mount unit. But for the time being, I can declare this one "good enough" and can move on to the 38-250EZ.
(This 37-670 is mine, so I can worry about making it more "perfect" later on. At least now I know it works without the sizzling, and I know the power transformer is OK. Whew!)
--
Ron Ramirez
Ferdinand IN
Posts: 667
Threads: 11
Joined: Sep 2014
City: Bellmawr, NJ
Posts: 1,475
Threads: 69
Joined: Nov 2012
City: Kansas city, MO.
Good job Ron as usual. I appreciate the time you take to show your work and why you did it. I have never had to replace the whole canohm before and seeing the way it was done really helps.
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand
State, Province, Country: Indiana
Thanks, Ken and Mike.
Last night, I pulled the cabinet off the shelf - and, lo and behold, there was the grille cloth backing board, with decent original cloth, stuck inside the cabinet.
So, I put it all together, took a quick "after" photo (below), then unplugged it, disconnected the antenna, and set the complete radio back on the shelf.
[Image: http://www.philcoradio.com/images/phorum..._00003.jpg]
On to the 38-250EZ...
--
Ron Ramirez
Ferdinand IN
Posts: 5,060
Threads: 269
Joined: Nov 2012
City: Bandon
State, Province, Country: OR
Posts: 1,872
Threads: 212
Joined: May 2015
City: Seattle
State, Province, Country: WA
Posts: 2,353
Threads: 92
Joined: May 2010
City: Clayton, NC
Posts: 2,570
Threads: 336
Joined: Jun 2013
City: lawrenceville nj
ron
cabinet really great ![Icon_clap Icon_clap](https://philcoradio.com/phorum/images/smilies/icon_clap.gif)
chassis looks good too ![Icon_thumbup Icon_thumbup](https://philcoradio.com/phorum/images/smilies/icon_thumbup.gif)
don`t for get to put in
philcos all a glow thread which has not been seen in awhile
sam
Some day, and that day may never come, I will call upon you to do a service for me. But until that day, accept this justice as a gift
mafiamen2
Posts: 2,353
Threads: 92
Joined: May 2010
City: Clayton, NC
His chassis-work is what impresses me the most. Ron is one of the few who will and CAN take a chassis down to metal frame and tube sockets, rewire all, and have it work!!
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand
State, Province, Country: Indiana
Thanks, guys!
Tom, you're too kind, thank you. (And it was great to see you again at K-town, by the way!)
Now, mind you, I did not take this one down to the bare chassis. In fact I probably should go back and give the top of the chassis a good cleaning. It isn't too bad, really, but a cleaning would make a difference. And I've been debating on whether or not to replace the speaker wires. The old ones are still in good shape, so I have left them for now.
Sam, I guess I should have taken a photo of the 37-670's dial in the dark. It would be hard to do now, since I've put it back on the shelf where there are no outlets. (Incidentally, both the dial lamp and shadowmeter lamp are LEDs.)
--
Ron Ramirez
Ferdinand IN
Posts: 15,444
Threads: 539
Joined: Oct 2011
City: Jackson, NJ
Looking good, Ron.
Feel better.
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.
Posts: 7,248
Threads: 266
Joined: Dec 2009
City: Roslyn Pa
Nice job!! But you need to dirty up the filters they look too new.
Terry
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand
State, Province, Country: Indiana
Mike - Thanks, I am better. I think it was a variation of a stomach virus, without all of the...shall we say, collateral damage.
Terry - Yup, I now have the habit of polishing all of the aluminum electrolytic cans that I rebuild. (And thank you, too.)
--
Ron Ramirez
Ferdinand IN
Users browsing this thread: 1 Guest(s)
|
Recent Posts
|
PT-6 antenna connections
|
Notice in the schematic the notch at the bottom of the antenna coil is between pins 3 & 4.
Yes, pin 6 of the 7C6 is...RodB — 07:34 PM |
bridkarl
|
I have two PT-6 chassis. On both there is a blue wire that runs from the above chassis transformer to pin 6 of 7C6. So t...bridkarl — 07:23 PM |
Cannot Adjust an IF Transformer’s cores
|
Joseph, now you are an engineer!!RodB — 06:37 PM |
PT-6 antenna connections
|
Hi, reading your explanation I can see the confusion. If you take it one connection at a time it should result in a desi...RodB — 06:34 PM |
Cannot Adjust an IF Transformer’s cores
|
It works! I received the PCBs this morning in the mail, and put everything together. I reused the base from the original...jrblasde — 04:32 PM |
PT-6 antenna connections
|
I seem to have lost my way on this PT-6.
I see the antenna aerial transformer schematic - I’m reading pins 1 through ...bridkarl — 12:30 PM |
40-150 General questions
|
Good thing you're a good electrician ... the pictures show a lot of rewiring in your future! Take care and BE HEALTHY!...GarySP — 11:52 AM |
40-150 General questions
|
I think RobB has it right. It is a part number and looks like its stamped on the chassis and that wasn't something you ...klondike98 — 11:41 AM |
40-150 General questions
|
It's most likely a part number. Most of Philco part numbers are in that format. I looked at the parts list for this mode...RodB — 08:10 AM |
40-150 General questions
|
Hi Kevin,
No, I don't but I like your Quote about being a good electrician. The way I look at it is "The fact ...MrFixr55 — 08:06 AM |
Who's Online
|
There are currently 2743 online users. [Complete List] » 4 Member(s) | 2739 Guest(s)
|
|
|
![>](https://philcoradio.com/phorum/images/bootbb/asb/right_arrow.png)
|