Re: KPA3 output erratic


Ray Maxfield
 

Hi Chuck..

I just seen your post…

Sorry if I repeat……..

It sounds like the SWR circuit is trying to Shut down the Output.

Inspect Everything on the Output of the Finals to the SO-239 Connector.

Change the Cable to your 50 Ohm Load.  

Ray WA6VAB  K3

 

From: Chuck Miller
Sent: Friday, August 7, 2020 12:00 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] KPA3 output erratic

 

Mike;
I had already done the gold pin replacement. The instructions said if the pins were hot and discolored to change the edge connector too. The short set of pins (the pins on the KPA3 were discolored, so I changed that edge connector. The pins on the main RF board weren't discolored, so I didn't change the longer edge connector. I thought maybe I should have, so this morning I changed the long edge connector, reassembled and checked it again. No difference.
I noticed if I set the power to about 35 watts, after a few seconds the power comes up, but oscilates a bit. I guess it's time to send Elecraft another email.

Thanks, Chuck
N0NC

 

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