Posts: 28
Threads: 3
Joined: Nov 2019
City: Salisbury
State, Province, Country: NC
Thanks for the add! I hope to learn more from the experts here. I have recapped my 41-608 (thanks for the help on another thread on wiring can #21) but still don't have any radio stations what so ever. There is still a slight hum in the sound but now the phonograph is at least audible. Are there any hidden caps I could have missed? Any help will be appreciated. Again thanks
Posts: 15,444
Threads: 539
Joined: Oct 2011
City: Jackson, NJ
Recap is only the first step.
You have to attempt to align the radio, and if you cannot pass the signal through and you are sure your tubes are good, start looking for open RF doils.
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
Hi Derek and welcome,
I would break out the signal generator and set it up to produce a modulated 455KC signal. Connect the output of the generator to terminal strip on the back of the chassis terminals 2 (signal side of the generator) and 3 (to the gnd side of the generator). If the IF and det stages are working you should hear If you the modulating tone. At this point you can adjust #27a, 27B and 30. If you are using a old 50's service grade generator double check the calibration . Turn the set on in the dark and make sure that all the tube are lit, the loctals can be a little hard to see into.
GL.
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!
Terry
Posts: 28
Threads: 3
Joined: Nov 2019
City: Salisbury
State, Province, Country: NC
I don't have a signal generator so it will have to go to a shop to be adjusted. I found the hum I connected the negative side of 21B to the wrong terminal now the phonograph sounds great! Thanks for the help
Posts: 1,155
Threads: 23
Joined: Jan 2014
City: Wellborn Florida
Found some info from Beitmans.
Posts: 15,444
Threads: 539
Joined: Oct 2011
City: Jackson, NJ
Derek,
A SG could be (if you don't want to invest much) a $20 job like a Leader or such, a 1-tuber. For a beginner and troubleshooting quite enough.
Not sure what shop it is but if it is a commercial place, the charge will be such that you could buy 3 to 5 of these.
If you are serious about radios, at least get that.
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: 28
Threads: 3
Joined: Nov 2019
City: Salisbury
State, Province, Country: NC
Didn't know they were that reasonable what would you suggest for someone that wouldn't be using one that much and would be simple for a beginner like me
Posts: 28
Threads: 3
Joined: Nov 2019
City: Salisbury
State, Province, Country: NC
I just received my signal generator and connected the red lead to the number 2 terminal on the back of the radio and the black lead to the number 3 terminal. I then turned the dial all the way to the right. I switched both units on and hear no signal. What did I do wrong or what could be the problem.
Posts: 28
Threads: 3
Joined: Nov 2019
City: Salisbury
State, Province, Country: NC
Posts: 28
Threads: 3
Joined: Nov 2019
City: Salisbury
State, Province, Country: NC
Retryed again today on working radio and got my tone so generator works. Reconnected to philco and tone came through. Adjusted 27a 27b 30a and 40a by instructions on Rider pg&e 12-76. Still no signals. Operation 2 on Riders says to connect generator to "loop signal generator" and set generator to 1500 khz. Where is this located.
Posts: 7,248
Threads: 266
Joined: Dec 2009
City: Roslyn Pa
What they are saying is to use a loop connected to the output of the generator placed near the ant loop of the radio. This loop on the generator would consist of about 20t of hook wire 1' in diameter.
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!
Terry
Posts: 28
Threads: 3
Joined: Nov 2019
City: Salisbury
State, Province, Country: NC
By hook wire do you mean picture hanging wire
Posts: 7,248
Threads: 266
Joined: Dec 2009
City: Roslyn Pa
Sorry meant hookup wire.
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!
Terry
Posts: 28
Threads: 3
Joined: Nov 2019
City: Salisbury
State, Province, Country: NC
Don't want to sound bad but what is hookup wire?
Posts: 7,248
Threads: 266
Joined: Dec 2009
City: Roslyn Pa
Just regular old wire. Plastic or enamel coated. Average gauge like 18 to 26 is good.
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!
Terry
Users browsing this thread: 1 Guest(s)
|
Recent Posts
|
PT-6 antenna connections
|
Hi Bridcarl
+1 on the others. Pin 6 of the 7C6 is the AVC Diode so it is appropriate that that pin 4 of the coil con...MrFixr55 — 07:30 AM |
462ron
|
Joseph, this is beyond awesome. A lot of thought and engineering went into this and you hit a home run! Now I must save ...462ron — 07:27 AM |
Cannot Adjust an IF Transformer’s cores
|
Outstanding work indeed. I wish I could come up with solutions like this.slford310 — 11:16 PM |
Cannot Adjust an IF Transformer’s cores
|
The abilities of our 'Phorum Pholks" never ceases to amaze me! Fantastic fabrication, Joseph! I'm waiting now for...GarySP — 08:27 PM |
PT-6 antenna connections
|
Thanks. I never realized that was a notch noted in the schematic as described. I’ll recheck my wiring.bridkarl — 08:13 PM |
Cannot Adjust an IF Transformer’s cores
|
Thank you! I was quite new to the Phorum when I started this post, so I feel like it might be advantageous to publish a ...jrblasde — 08:07 PM |
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 |
Who's Online
|
There are currently 3625 online users. [Complete List] » 3 Member(s) | 3622 Guest(s)
|
|
|
![>](https://philcoradio.com/phorum/images/bootbb/asb/right_arrow.png)
|