[Amps] New/old SB-221 start up

[Carl]

Do it with the voltage that matches the Variac and bring it up slowly to 
full voltage over some period of time. Are the electrolytics the originals 
and if so have they been reformed and leakage measured?

Carl
KM1H


----- Original Message ----- 
From: "Mike" <noddy1211 at sbcglobal.net>
To: <amps at contesting.com>
Sent: Monday, November 09, 2009 8:50 PM
Subject: [Amps] New/old SB-221 start up


>I have a newly built SB-221.  I need to test that it actually works, and
> test for construction problems etc.  I have it wired for 240 volts and was
> thinking of bringing it up slowly on a 120v Auto Transformer in stages as
> the components including capacitors are all original except for components
> supplied in recommended modifications.  Should I do this without the tubes
> installed which are also 30 years?
>
> Does anyone see anything wrong having the amp wired for 240v and bringing 
> it
> up from 50v to 120v, and if no bangs or flashes then putting 240v to it?
>
> 73, de Mike K6BR
>
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