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

Thread Closed

Philco 39-7 resto
#31

Good idea. I will do so later today.

Hope the shows were good. On the weekend, we have old radio shows on at night on one of the AM stations. Looking forward to listening to them once the radio is working. Icon_smile
#32

Very good. Don't know where on the planet you are but there's a couple of AM stations out of Canada that play OTR in the night. One is at 740kc runs 10-11:00pm Monday-Thursday and 900kc around 10:00- 3:00am or so M-F.
Enjoy!
Terry

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got it!

Terry
#33

Is this your set? I have the feeling we are talking about more than one here.

http://www.nostalgiaair.org/PagesByModel...013301.pdf
#34

Just one set. But pwr trans was replaced and it uses an 80 instead of the 84 tube.
Terry

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got it!

Terry
#35

Thanks, missed that.
#36

Yes, just one set. The power transformer was replaced with an Inca C60 ... no idea what that means. I haven't found any info on it.

Also, the 84 rectifier tube has been replaced with an 80 tube. Some wiring does not match the schematic, but not very much. I think this has been done due to the transformer replacement, but not sure. There is no evidence that there was a problem, insofar as I haven't seen any noticeable burn marks, or melted anything under the chassis.

I wasn't able to test the transformer today, so I will do that in the morning before work. I do have a question. I did not mount a terminal strip for the electrolytic capacitors. They are just kind of hanging out. Could that be a problem?
#37

Regarding the electrolytics: So long as they are physically supported on both ends and the leads insulated to prevent shorts, it's OK. The old can electrolytic must be disconnected from the circuit. Depending on the physical layout a terminal strip is not always needed. Just consider what might occur if you shipped the radio and let that be your guide.
#38

Ok. The electrolytics should be ok. I have disconnected the old ones, so will check for other possible issues (like the transformer). Icon_smile
#39

I put this on the shelf for awhile, as I think there is more wrong with it than I first thought. I finished my Zenith 10s690, and thought I would tinker with this again some more.

I finished the recap and put in new resistors. I also corrected some wiring differences so that it now matches the schematic, with the rectifier being the only discrepancy. I plugged it back in, and am happy to report that I didn't burn anything up. Icon_biggrin

But, there was no change insofar as there is no sound at all coming from the unit.

Earlier in the thread, it was recommended that I do some readings with my meter. I did do those, but don't remember what they were. I will do that again, and report back.

Nicole
#40

Sounds good will be around.
Terry




Users browsing this thread:
[-]
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 2201 online users. [Complete List]
» 2 Member(s) | 2199 Guest(s)
AvatarAvatar

>