model 42-395 humming - Guest - 08-05-2008
I recently picked up a Philco 42-395. I turned it on and waited for it to warm up and it began humming. 5 or so seconds later the stations began working. The humming is the reason for this thread and I tried searching the others but could not find anything similar. You all know more about these radios than anyone else I could find and I'm sure it is a simple fix. Can anyone help point me in the right direction?
Thank you in advance
Doug
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Ron Ramirez - 08-05-2008
The electrolytic capacitors are failing.
Do not, repeat,
DO NOT operate the set again until they are replaced!
Failure to heed this warning WILL result in a burned out power transformer if you continue to operate the radio in this condition.
The paper capacitors must be replaced also, if you plan to operate the radio.
![Icon_smile Icon_smile](https://philcoradio.com/phorum/images/smilies/icon_smile.gif)
And beware that rubber-covered wiring too!
Philco made some really decent radios between 1939 and 1942...but the crumbling rubber insulation on the wires makes them especially difficult to service.
- Guest - 08-05-2008
Thanks Ron for the information, I knew you'd have the answer. Any good sites where I can download a schematic to show me everything you described? Don't suppose these are items I can pick up at Radio Shack, or can I?
Doug
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Ron Ramirez - 08-06-2008
Hi
For a quick freebie, look here:
Nostalgia Air
But for good, clear, comprehensive service information, I recommend Chuck Schwark's Philco schematic service. More info here:
PHILCO SCHEMATIC INFORMATION
Well worth the modest cost.
Edit: No, you won't find the electrolytic and paper capacitors you need at Radio Shack. You can look
here for a listing of Philco resources on my site.
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Michael Dennis - 08-06-2008
Yes, Chuck Schwark's schematics are the BEST! Well worth the aforementioned modest cost. You'll be well pleased!
Mike
"Did you say 'two utes'?'