39-19 Background Noise

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39-19 Background Noise

Olskuul
Olskuul

Posts: 33
Threads: 5
Joined: Apr 2015
City: Townsend, MA

02-20-2017, 12:47 PM

Hi guys. I just did a complete electrical restoration on the 1939 Philco console and it has hash noise across the broadcast band. It's present on the shortwave band, but not as prevalent and it varies with the volume pot. It's not smd with this if can type. This was a bare chassis up restoration and I did a triple check against the schematic on the wiring and component values and all look good. All caps, except micas have been replaced, along with most of the resistors. I also performed an alignment procedure more than once. So now I'm wondering if there may be some critical wiring paths to be aware of. Or maybe a faulty tube? A leaky new cap? I have test equipment, including a scope, but I'm not sure how to trace and isolate this problem.
Any help would be appreciated.

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Messages In This Thread

39-19 Background Noise - by Olskuul - 02-20-2017, 12:47 PM

RE: 39-19 Background Noise - by Radioroslyn - 02-20-2017, 01:14 PM

RE: 39-19 Background Noise - by Olskuul - 02-20-2017, 02:12 PM

RE: 39-19 Background Noise - by morzh - 02-20-2017, 03:31 PM

RE: 39-19 Background Noise - by Olskuul - 02-20-2017, 05:20 PM

RE: 39-19 Background Noise - by morzh - 02-20-2017, 06:17 PM

RE: 39-19 Background Noise - by Olskuul - 02-22-2017, 08:23 AM

RE: 39-19 Background Noise - by Radioroslyn - 02-22-2017, 11:34 AM

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