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1. [Amps] SB-220 and Copious Amounts of Smoke... (score: 1): Author: Jeff Carter <amps@hidden-valley.com>; Date: Wed, 4 Feb 2009 00:28:10 -0500; Hi all, The SB-220 I've been rebuilding has developed a problem. I put brand new tubes in it, and when I fired it up, within ten minutes the filament transformer began *smoking*. I thought maybe some; /archives//html/Amps/2009-02/msg00056.html (7,111 bytes)
2. Re: [Amps] SB-220 and Copious Amounts of Smoke... (score: 1): Author: Gudguyham@aol.com; Date: Wed, 4 Feb 2009 07:31:35 EST; With no load the filament transformer draws little current, with tubes in, it draws 30 amps. If there is a suspect short in the transformer it will be more prominent with the tubes in than without. A; /archives//html/Amps/2009-02/msg00060.html (7,234 bytes)
3. Re: [Amps] SB-220 and Copious Amounts of Smoke... (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Wed, 4 Feb 2009 11:56:29 -0500; There are numerous postings on the Internet why that short occurs and the procedure to eliminate the problem with a new transformer. Carl KM1H _______________________________________________ Amps mai; /archives//html/Amps/2009-02/msg00074.html (8,353 bytes)
4. Re: [Amps] SB-220 and Copious Amounts of Smoke... (score: 1): Author: "Fern Rivard" <crc@cyberlink.bc.ca>; Date: Wed, 4 Feb 2009 11:10:58 -0700; Jeff: It sound like transformer windings are shorted out. This was a fairly common problem with this happening to that transformer. Fern Hi all, The SB-220 I've been rebuilding has developed a proble; /archives//html/Amps/2009-02/msg00081.html (8,669 bytes)

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