[TenTec] Centurion problem

[mcelmer1]

I had this problem - both times it was the QSK board. I recently had another 
problem but can not remember the symptons - they appeared to another QSK 
board but it was the AC/bias board.

FWIW, the afterburner is 10+ years old and never had a relay problem. Over 
the years, Ten Tec has comp'd (that means no charge) a few parts. As time 
goes on, parts are rarer, supplies decrease, prices increase.

I would consult with Jim at Ten Tec. A QSK board will set you back about $50 
if they are still stocked.

Mike
W8TRN
----- Original Message ----- 
From: "Jim Brown" <k9yc at audiosystemsgroup.com>
To: <tentec at contesting.com>
Sent: Saturday, January 05, 2013 11:03
Subject: Re: [TenTec] Centurion problem


> On 1/4/2013 2:08 PM, Doyle wrote:
>> I have been having problem with my receive not returning after 
>> transmitting.  This also happens using either a TS-590 or Omni VI.
>>
>>      Is it possible to clean the relay contacts in the amp?  Where is the 
>> relay located?located.
>
> It sounds like a vacuum relay going bad. Contacts are not accessible. You 
> replace the relay.  Ten Tec is VERY expensive as a source of parts, and as 
> a reapir station.  If you have reasonable soldering skills, you can 
> replace the relay in an hour or two. You'll need to figure out the 
> manufacturer's part number.  Ten Tec used two over the years, KiloVac and 
> Jennings. They are very different physically, so you need to figure out 
> which you have. The Jennings is an RJ1A, and sort of looks like a stack of 
> nickels with leads on top. The KiloVac is long and skinny, with leads 
> along the body.
>
> You also need to know the coil voltage. I don't know the Centurion, but 
> Titans use 28Vdc, and the Hercuules II uses 12Vdc.  Look at the schematic 
> to figure out what the voltage is for the low voltage power supply.
>
> These relays are widely available in the $75 range, both as "pulls": from 
> mdiecal electronics, and new from a company called GigaVac. Alpha now uses 
> GigaVac, and I've been using them for about five years.  GigaVac will sell 
> them direct to hams at a discount, about $75, and you can also buy them 
> from a dealer, Max Gain Systems.
>
> 73, Jim K9YC
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