Hi John
I don't have an amp, but it sounds as if you
lost bias ( if the finals require bias) Check the bias circuit.
ron
K3MIY
-----Original Message-----
From: tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]On Behalf Of john
Sent: Friday, March 09, 2007 2:30 PM
To: tentec@contesting.com
Subject: [TenTec] Centurion probs
I've had a recent failure with my Centurion... was operating it about
600
watts out, when I heard a "TICK" noise (sounded mechanical, not electrical)
and noted that output power dropped. Plate voltage was still normal, but no
indicated plate current).
I happened to look into the grill on the top and the PA plates were red.
Turned everything off, then back on a day later, at first all was well,
then the same thing happened again ...amp was normal, then output power
dropped to exciter levels, and the plates began getting hot
Ideas?
John K5MO
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