[irisheye]

A newbie here in everyway. The schematic for the Model 39-6 lists the following: "Condenser (.006, moulded)".
From left to right on the arrow of this rectangular capacitor are a blue, black and red circle, straight forward enough. However in the right top corner is a fourth circle , colored yellow. Can anyone decipher this for me?
Also, would this be a molded paper capacitor? Thanks in advance and I hope I've followed the posting procedure. My first time.

[klondike98]

Welcome to the Phorum!

You are doing fine!

I've added a link in your post to the Nostalgiaair Schematic and I believe the fourth Yellow color would be the voltage rating, i.e. 400v  based on the following: http://www.radioremembered.org/capcode.htm

[Nick3092]

Assuming you are talking about part #29, that is a line to ground cap and should be replaced with a Y2 "safety cap". It's a special type of cap that prevents the chassis from becoming live if it fails. Plus these caps are built to withstand the AC line voltage, as where most caps are only rated for D.C.

[Nathan Slingerland]

You can buy Y2 rated capacitors from places like justradios.com, or Sal's Capacitor Corner (http://www.tuberadios.com/capacitors/) or here's one from Mouser that should work:

http://www.mouser.com/ProductDetail/Vish...9Y5US63V7/

[irisheye]

You can buy Y2 rated capacitors from places like justradios.com, or Sal's Capacitor Corner (http://www.tuberadios.com/capacitors/) or here's one from Mouser that should work:

http://www.mouser.com/ProductDetail/Vish...9Y5US63V7/

Thank you all very much. Let me ask how did you know it was a y2 rated capacitor? 
Again everybody, thanks alot.

[Radioroslyn]

You can buy Y2 rated capacitors from places like justradios.com, or Sal's Capacitor Corner (http://www.tuberadios.com/capacitors/) or here's one from Mouser that should work:

http://www.mouser.com/ProductDetail/Vish...9Y5US63V7/

Thank you all very much. Let me ask how did you know it was a y2 rated capacitor?

Deduction my dear Watson. There's only two .006 caps in the set. One is the ac line bypass (this one is the Y2 cap) and the other is the plate bypass for the 41 tube. That one is fine with a regular 630v mylar.

[klondike98]

Here is some info on safety caps and where you use y vs x caps

http://www.justradios.com/safetytips.html

[irisheye]

Here is some info on safety caps and where you use y vs  x caps

http://www.justradios.com/safetytips.html

Thank you very much. There is so much to read, love it!

[irisheye]

You can buy Y2 rated capacitors from places like justradios.com, or Sal's Capacitor Corner (http://www.tuberadios.com/capacitors/) or here's one from Mouser that should work:

http://www.mouser.com/ProductDetail/Vish...9Y5US63V7/

Thank you all very much. Let me ask how did you know it was a y2 rated capacitor?

Deduction my dear Watson. There's only two .006 caps in the set. One is the ac line bypass (this one is the Y2 cap) and the other is the plate bypass for the 41 tube. That one is fine with a regular 630v mylar.

Gotcha. Reading the info from Bob and with your deduction Mr. Holmes it makes sense. I will assume it is ok to ask another question in this thread. Now on to " A Study in Scarlet".  
I have replaced the capacitors, learned to solder, have begun to make sense of schematics, replaced what I believe is #23 on schematic (70 0hms, 1/2 watt resistor) and had to replace the power transformer wires (I can see you frowning.)  The dim bulb tester worked as described, however I have no sound whatsoever from speaker, no static, nothing.
I was given this radio 40 years ago and it worked until about 5 years ago when one of the grandkids knocked it off the table, broke two tubes and put a large hole in speaker. Today is first time its been turned on since then.
Finally, the question is.......... any ideas on why the lack of sound?

Other than the obvious fact that Ive been working on it, that is.

Thanks,
Dave