Early 220's had a problem with shorting the filament/bias transformer if it
was wired for 115V and the zener shorted. There is a change notice on the
web.
Carl
KM1H
----- Original Message -----
From: "mike stokes" <mike9v@gmail.com>
To: "Amps" <amps@contesting.com>
Sent: Tuesday, April 23, 2013 6:28 PM
Subject: [Amps] SB-220 help
I just picked up a used non working SB-220. Suppoesdly the filament
transformer smoked. Still have to pull it apart and see what is going
on inside. Tubes are supposedly still good.
The question I have is it possible/likely that a tube failure caused
the filament transformer to smoke ? What is the best way to check the
tubes to insure they don't cause more problems ?
Thanks in advance.
--
Mike Stokes
KK9V
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Version: 10.0.1432 / Virus Database: 3162/5768 - Release Date: 04/23/13
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