Good point Jim.  I missed that.  In that case likely the fault would be the 
bias control on the Bias/QSK board.
 Without doing a magnetization test, as the primaries will show a very low DC 
resistance, a primary short would be difficult to determine.  Of course if 
the primary is shorted to the frame, a DC measurement would show this.
Sounds like further and detail trouble shooting might be in order.
73
Bob, K4TAX
 ----- Original Message ----- 
From: "Jim Brown" <k9yc@audiosystemsgroup.com>
To: <tentec@contesting.com>
Sent: Sunday, February 02, 2014 12:44 PM
Subject: Re: [TenTec] 422 Centurion blowing fuses...
 
On 2/2/2014 10:13 AM, Bob McGraw - K4TAX wrote:
 
He said one of the primary windings in shorted.
 
 
 Something about this does not compute. The original post said that he 
didn't blow fuses until he went from standby to operate.  If the 
transformer were shorted, I'd expect a fuse to blow with first power 
applied to the transformer.
73, Jim K9YC
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