SPARTON 601-FR - Printable Version
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+--- Thread: SPARTON 601-FR (/showthread.php?tid=3964)
SPARTON 601-FR - Bradley Rush - 11-20-2011
601 B close but Its not perfect
HELP
Re: SPARTON 601-FR - Radioroslyn - 11-20-2011
So what do you need help with? How's the model 80 working?
Terry
Re: SPARTON 601-FR - Bradley Rush - 11-21-2011
I just got the speaker back for the Model 80. I want to get some 20g color wire to redo the all the wiring. I have got some cloth. But looking for some 400v various color to finish it.
On the Sparton 601-FR I have several different resistors than is called for in the schematics. (FR-601 B) around 12SQ7GT R6 is not 22K its 68k . The set is completely dead. I have replaced all the caps. Just dont want to replace all the resistors if i dont have to.
Checked all the tubes. Going tube to tube insuring its all is hooked up. Just wondered if anyone had the 601-FR Schematics?
Re: SPARTON 601-FR - Bradley Rush - 11-21-2011
http://www.flickr.com/photos/trog8/sets/72157628076969771/
The schematics are different no short wave switch? I have Schematic 601B 601 is a different tube compliment.
Re: SPARTON 601-FR - Bradley Rush - 11-21-2011
it looks more like an 601 MS parts wise but looks more like 601 b or 601 s or 601 schematics
Except no filament transformer
on 601 FR
Re: SPARTON 601-FR - Radioroslyn - 11-21-2011
Well it doesn't matter so much, what tubes does it use? First off you'll want to measure the voltage at the cathode of the rectifier tube to B-
Terry
Re: SPARTON 601-FR - Bradley Rush - 11-22-2011
I have 35Z5GT,35L6GT, 12SQ7GT, 12SK7GT, 12A8GT, 12SK7GT
35Z5GT
Pin 2 3 5 = 115V ac
Re: SPARTON 601-FR - Radioroslyn - 11-22-2011
So how much dc voltage do you have across the filter caps?
Terry
Re: SPARTON 601-FR - Bradley Rush - 11-23-2011
I have found 12sq7 only reading on pin 8 (Filaments) nothing on pin 7 no connection between the two do not have another ordering one now.
zero volts across the caps.
Bradley
Re: SPARTON 601-FR - Radioroslyn - 11-23-2011
Sounds good so far.
Terry
Re: SPARTON 601-FR - Bradley Rush - 11-27-2011
After Replacing the 12SQ7
ITS WORKING !!!!!!!!!!!!!!!!!!!
Thx Terry