[TenTec] TT Centurion AMP failure

Mike Schatzberg wow_chf at hotmail.com
Wed Feb 17 15:29:57 PST 2010


The triodes are a zero bias tube, and 200 mils sounds close for no bias voltage. The amp should still make power, although in the wrong class of service. If it does make power, you have lost your cut off bias voltage and will have to trouble shoot that circuit. If both tubes are glowing about the same color, good chance the bias supply is your problem or your bias voltage switching. 73 and Happy DXing, Mike W2AJI Tryon NC


-----Original Message-----
From: Doyle
Sent: 2/17/2010 9:47:29 PM
To: tentec at contesting.com
Subject: [TenTec] TT Centurion AMP failure
Help,
    Was operating RTTY when my Centurion Amp quit working.  The symptom is
that it shows 200 Ma Even in the Stnby position the plate current is 200 Ma
& the tubes are moderately red.  The tubes are only a year old.  Any idea
what might have happened?  Looks like a trip a trip to TT.
    Anyone with a Centurion Amp have this symptom?
Thanks,

Doyle/N4VV

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