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Re: [TenTec] 422 Centurion blowing fuses...

To: <k9yc@arrl.net>, "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] 422 Centurion blowing fuses...
From: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 2 Feb 2014 12:54:10 -0600
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
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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