Try tightening up the screws on the filter capacitor.
Steve N4LQ
----- Original Message -----
From: <Kb4utv@aol.com>
To: <tentec@contesting.com>
Sent: Tuesday, August 03, 1999 11:11 PM
Subject: [TenTec] Century 21 problem
>
> I have a Century 21 with a drive problem. It is hard to get the full 60
> watts input without drawing to much current from the power supply. I get
the
> hum in the side tone whenever this occurs. Also when it seems to be
behaving
> itself, the power output will flucuate between 30 and 15 watts, never a
> steady output/input, but not a large current pull on the power supply. I
> checked antenna, coax, etc to be sure I wasn't getting a mismatch. Am
using
> a MFJ Tuner. I think it might be associated with the power supply. The
> switching transistor on the rear panel, I believe it is a 2N3055, gets
really
> hot. Could this transistor be the problem? Looking at the power supply
> diagram, I think this is what regulates the voltage for the drive
operation.
> Am I on the right track? Any suggestions most helpful. 73's John
KB4UTV
>
> --
> FAQ on WWW: http://www.contesting.com/tentecfaq.htm
> Submissions: tentec@contesting.com
> Administrative requests: tentec-REQUEST@contesting.com
> Problems: owner-tentec@contesting.com
> Search: http://www.contesting.com/km9p/search.htm
>
>
--
FAQ on WWW: http://www.contesting.com/tentecfaq.htm
Submissions: tentec@contesting.com
Administrative requests: tentec-REQUEST@contesting.com
Problems: owner-tentec@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|