RCA Model A39

[Joseph Skrypka]

Hi guys
I’m bringing an RCA A39 radio back to life. I’ve recapped all of the electrolytic and wax/paper caps, and replaced all of the out of spec resistors (about 1/3 of the resistors). I’ve not changed any of the mica caps (there are many).
It has come back to life (it was dead), but the audio quality is quite raspy.
I have the technical information, it’s good, but does not have voltage information, which I find odd – does anyone have access to point voltage information for this radio?
Can anyone give me direction on where to look for a possible reason for the raspiness?
The tubes all test well.
I haven’t re-aligned the radio yet.
Thanks for any advice that you folks may have!

[Joseph Skrypka]

I’ve attached a copy of the schematic. The entire file was too large to send.
Joe

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[Dan Walker]

I have found that once the radio is aligned it usually makes quite a difference.
I have the rad books on RCA, so I will have a look
Dan in Calgary

• This reply was modified 4 years, 7 months ago by Dan Walker. Reason: added information

[Dan Walker]

I did check my books and there are no voltages for that model
Dan in Calgary

[garykuster]

Looks like all the info is at Radiomuseum.

https://www.radiomuseum.org/r/rca_victor_a_39.html

[Joseph Skrypka]

Dumb me. I found the voltages on a separate page in the document that I had downloaded so I’ll check them out later today.
Any other ideas on the raspiness before I do any more? It kind of sounds over-driven so dealing with any over-voltages may fix that problem.
Failing that and an alignment, are there any other typical reasons for a raspy sound?

[Dan Walker]

Hello Gary;
I just picked up a model A 39, and I was wondering how you made out with yours [back in 2021]?
I have not got to mine yet but I hope to in the next week.
Dan in Calgary

[Lee Whitehead]

Speaker problems?

[Dan Walker]

I just removed the speaker from the cabinet and I find that the cone is not attached to the cage [no glue or anything]
It had a large felt ring between the edge of the cone and the speaker board.
I am not sure if I will put a few dabs of glue to hold the cone
to the cage. Was the cone attached to the cage on your speaker?
Thanks
Dan in Calgary

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