The responses have confirmed what I was already thinking/my gut was telling me.
I guess I was hoping some fount of wisdom would show me why replacing the fuses
at this point made some sense!
Stuart--thank you for the thought on making a diagram of anything I disconnect
to isolate a component. So maybe this weekend I'll set up a suitable workspace
and begin the process...safely. I don't know how long those capacitors could
hold a charge, but I won't be taking any chances with them.
Doug...sorry about your experience. Ouch doesn't begin to describe it.
I just hate it that I'd left the shack at that point, though in all probability
it would not have told me much to have been there.
73,
Art
--- On Mon, 3/22/10, Doug Ferguson <thenewt@msn.com> wrote:
From: Doug Ferguson <thenewt@msn.com>
Subject: Re: [TenTec] Troubleshooting Titan 425 Problem
To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Date: Monday, March 22, 2010, 4:41 PM
Art,
I am eagerly awaiting the return of my 425 after a $1200 repair bill from
Ten-Tec. Mine kept blowing
fuses every few months and after replacing them, everything seemed fine.
However, this last time,
something happened to the input circuit which presented a high SWR to my
Transceiver even though my
output and everything else seemed normal. I could find no burnt components,
bad connections, etc. so
just decided to send off for repair. As it turned out, there was an
occasional short to the case which
ended up ruining the T/R switch and the power transformer!!
Lesson learned: if fuses blow, there could be a reason other than just poor
operating.
If you do decide to replace them, make sure you've checked every possible
inch of the amp for burn marks,
especially the case.
Good luck,
Doug - N7NM
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of Art Trampler
Sent: Monday, March 22, 2010 2:16 PM
To: tentec@contesting.com
Subject: [TenTec] Troubleshooting Titan 425 Problem
Hey Gang,
Today before work I turned on my Titan and went to the kitchen for a cup of
coffee. When I came back the amp was dead; its fuses are blown. I believe
I was gone for at least three minutes.
I am hoping it will burn out to be a problem with a filter capacitor or some
filter capacitors, but have this simple question:
Do I risk further damage to the unit and its tubes (if they are still good)
by replacing the fuses and turning it on, to see when the fuses blow/if
there are any other concurrent events, such as the it being ready to
operate, etc? If the failure is power supply related, I don't want to kill
the tubes inadvertently by this.
Thanks,
Art, KØRO
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