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[AMPS] My SB-220 smoked today too!

To: <amps@contesting.com>
Subject: [AMPS] My SB-220 smoked today too!
From: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net)
Date: Tue, 23 Sep 1997 06:01:23 +0000
Hi Gary,

> What got it?  Inrush  current?  Tube failure? Filter cap? 
> Just curious on the chain of events.

Tubes sometimes just fail. That simple fact of life used to keep TV 
repairman quite busy. All the chants to the photon Gods and voo doo 
science in the world won't change the facts. ;-)

I'd add a HV surge current limiting resistor (about 20 ohms 25 
watts) to the anode path, fuse the cathode line at the transformer CT 
with a two amp fuse (to prevent grid-filament short damage), and 
repair the damage the amp has.

73, Tom W8JI

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