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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+TT\s+Centurion\s+AMP\s+failure\s*$/: 17 ]

Total 17 documents matching your query.

1. [TenTec] TT Centurion AMP failure (score: 1)
Author: "Doyle" <n4vv@comcast.net>
Date: Wed, 17 Feb 2010 16:47:29 -0500
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 o
/archives//html/TenTec/2010-02/msg00194.html (7,439 bytes)

2. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: KEN RINDFLEISCH <rindfleisch457@msn.com>
Date: Wed, 17 Feb 2010 14:52:11 -0700
You need new 3-500 s. _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
/archives//html/TenTec/2010-02/msg00195.html (7,782 bytes)

3. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: Ed <w3nr@comcast.net>
Date: Wed, 17 Feb 2010 17:05:18 -0500
Was there any snap,crackle or pop ?? I would take a look at how TT provides cutoff bias. Usually its a zener in the B-/filament center tap. I would also take a look at the meter shunt resistor. My la
/archives//html/TenTec/2010-02/msg00196.html (8,234 bytes)

4. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: "Lyle Dunlap" <qskqrq@grics.net>
Date: Wed, 17 Feb 2010 16:18:40 -0600
Sounds more like a bias problem to me, if in the stby position you still have HV on the plates. Lyle _______________________________________________ TenTec mailing list TenTec@contesting.com http://l
/archives//html/TenTec/2010-02/msg00198.html (7,692 bytes)

5. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: "Phil Chambley Sr." <k4dpk@comcast.net>
Date: Wed, 17 Feb 2010 17:35:56 -0500
Doyle.... You almost certainly have a grid to cathode short in one of the tubes. Remove them one at a time and see what happens. Phil C. Sr. k4dpk _______________________________________________ TenT
/archives//html/TenTec/2010-02/msg00199.html (8,495 bytes)

6. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: "Doyle" <n4vv@comcast.net>
Date: Wed, 17 Feb 2010 17:55:20 -0500
Hi Phil, Received several responses. I just put in my old set of 3-500 tubes & have the same symptoms 200 Ma plate current in both the stnby/operate position. Only live 40 miles from TT, will take it
/archives//html/TenTec/2010-02/msg00200.html (9,743 bytes)

7. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: "Mike Schatzberg " <wow_chf@hotmail.com>
Date: Wed, 17 Feb 2010 23:29:57 +0000
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
/archives//html/TenTec/2010-02/msg00201.html (8,662 bytes)

8. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Wed, 17 Feb 2010 19:32:28 -0600
Or the keying line is stuck keyed to transmit. Might be a cable or the driver, not the PA. 73, Jerry, K0CQ _______________________________________________ TenTec mailing list TenTec@contesting.com ht
/archives//html/TenTec/2010-02/msg00202.html (8,792 bytes)

9. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: "Gary Hoffman" <ghoffman@spacetech.com>
Date: Wed, 17 Feb 2010 20:45:24 -0500
Could be its gone into oscillation and feeding back its own signal as drive. That, unfortunately, happens. _______________________________________________ TenTec mailing list TenTec@contesting.com ht
/archives//html/TenTec/2010-02/msg00203.html (8,787 bytes)

10. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: "Phil Chambley Sr." <k4dpk@comcast.net>
Date: Wed, 17 Feb 2010 20:57:51 -0500
Well, if the keying line is shorted, it should draw the standard quiescent current. Must be something on the QSK/cathode board. Phil C. Sr. k4dpk _______________________________________________ TenTe
/archives//html/TenTec/2010-02/msg00204.html (9,929 bytes)

11. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: "CSM\(r\) Gary Huber - AB9M" <glhuber@msn.com>
Date: Wed, 17 Feb 2010 20:53:12 -0600
Also look at the plate choke to see if its burnt.... but the best thing is to call TT with the details. Most likely you'll have to send it back but that's most likely the quickest resolution. Good lu
/archives//html/TenTec/2010-02/msg00205.html (9,953 bytes)

12. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: Carter <k8vt@ameritech.net>
Date: Thu, 18 Feb 2010 08:16:55 -0500
My vote is for the "Filament-AC" board (81537). Not too descriptive a name, but this is the board that provides the bias. The clue seems to be plate current in the standby position. You do not mentio
/archives//html/TenTec/2010-02/msg00206.html (9,632 bytes)

13. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: Richards <jruing@ameritech.net>
Date: Thu, 18 Feb 2010 16:32:09 -0500
What a comforting message... ;-) Sure... do it yourself... no problems... just remember it could KILL YOU ! Yeah.... no worries. .... FYI, DYI . == K8JHR == this board replacement is easily done at h
/archives//html/TenTec/2010-02/msg00209.html (8,809 bytes)

14. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: "Pumbaa" <pinkertontommrs@bellsouth.net>
Date: Thu, 18 Feb 2010 16:05:28 -0600
That is one thing (HV) I did consider when I decided to buy the Ameritron ALS-1300 Solid State Amplifier. The other is the lack of used Centurion amps for sale. Tom AG8K _____________________________
/archives//html/TenTec/2010-02/msg00210.html (9,972 bytes)

15. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: Carter <k8vt@ameritech.net>
Date: Fri, 19 Feb 2010 07:02:40 -0500
By George, I think he's got it!!! - It IS an easy job. - There IS dangerous voltage inside. Didn't know how else to put it. "Just the facts, ma'am". _______________________________________________ Te
/archives//html/TenTec/2010-02/msg00227.html (9,001 bytes)

16. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: <jmiller1706@cfl.rr.com>
Date: Fri, 19 Feb 2010 11:02:26 -0500
The Centurion is not rated for continuous full power operation for extended periods on RTTY, AM, and some other data modes. Short durations only, or you should reduce your exciter power appropriately
/archives//html/TenTec/2010-02/msg00230.html (37,026 bytes)

17. Re: [TenTec] TT Centurion AMP failure (score: 1)
Author: Richards <jruing@ameritech.net>
Date: Fri, 19 Feb 2010 11:03:24 -0500
Absolutely. I put the 10 meter board and tubes in my new Centurion. I had my wife, Susan, read me the instructions... again... as I went. We checked - and double checked - because I read those warnin
/archives//html/TenTec/2010-02/msg00231.html (9,887 bytes)

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