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On Fri, 28 Oct 2016 15:46:16 -0700, David wrote:
>
>I am getting Fault 21 on my Alpha 9500. The Fault Decoder Sheet from their
>website says it has to do with the Cathode +40V bias PS. It suggests that
>it might be a shorted tube. The tube is not shorted.
REPLY:
I had a 9500 where the tube arced and blew out the 40 VDC supply. Your
tube may not be shorted now but I suspect it arced at one time.
Fortunately my 9500 was under warranty and Alpha repaired it at no
charge, not even for shipping.
73, Bill W6WRT
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