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Re: [TenTec] Corsair I gone bad!

To: tentec@contesting.com
Subject: Re: [TenTec] Corsair I gone bad!
From: Stuart Rohre <rohre@arlut.utexas.edu>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Wed, 02 Nov 2016 15:17:01 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Look over the wiring and parts carefully for smoked components, int the stages where you heard sound and saw smoke.
You are looking for popped open capacitors as a first priority.

Also examine resistors for shifted values, and smoke damage.

This might have been a transitory event, where a connection popped off a terminal and shorted a voltage temporarily before burning out the shorted connection.
But all the possible issues 'should' have left clear smoke damage 
interior of the area where you saw smoke come out.
Use a high intensity light to see things like changes in color code on 
resistors, or dark areas under the chassis.
The Corsair is a pretty rugged and durable radio, well worth fixing. 
There should be several expert repair types on this list who might offer 
related failure experiences.
I have operated a friend's Corsair, and heard his tales of near 
overloads.  Instead of fuses, the Corsair uses a fast operation circuit 
breaker on the external Ten Ted power supply.  But it usually survives.
-Stuart Rohre
K5KVH
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