[NJARC] Curious Hum

[Phil Vourtsis]

It was the 35W4. As soon as I replaced it I was good to go.

Phil Vourtsis
Pres. New Jersey Antique Radio Club

-----Original Message-----
From: njarc-bounces at mailman.qth.net [mailto:njarc-bounces at mailman.qth.net]
On Behalf Of VOURTSIS, PHIL, INFOT
Sent: Tuesday, November 14, 2006 5:29 PM
To: njarc at mailman.qth.net
Subject: [NJARC] Curious Hum

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   I just recapped another one of the cheap audio amps with the typical
tube lineup- 35W4, 12AV6, 50C5. When I tested it after the recap it
sounded
fine until I reversed the ac plug. I got a tremendous hum that I could
control
with the volume control. Any ideas what could cause this? 
 
Phil Vourtsis
Pres- NJARC
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