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Re: [TenTec] triton 540 reversed polarity

To: <tentec@contesting.com>
Subject: Re: [TenTec] triton 540 reversed polarity
From: "Louis A. Ciotti Jr." <lciotti@twcny.rr.com>
Reply-to: lciotti@twcny.rr.com,Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: 07 Aug 2007 13:48:00 -0400
List-post: <mailto:tentec@contesting.com>
I would do this, but I do not have any source for injecting the signals 
required.  Right now I only have an old 40 MHz oscilliscope and a DVM...

-----Original Message-----
From: Kevin Purcell <kevinpurcell@pobox.com>
Date: Tuesday, Aug 7, 2007 1:39 pm
Subject: Re: [TenTec] triton 540 reversed polarity
To: lciotti@twcny.rr.com, Discussion of Ten-Tec Equipment 
CC: Kevin Purcell <kevinpurcell@pobox.com>, geraldj@storm.weather.net

Why not try to troubleshoot it rather than randomly changing parts?
>Do you have a signal source for audio and a tunable one for RF?
>Start injecting an AF signal at the speaker audio amp and work  
>backwards down the change towards the antenna. Switch to an IF  
>injected signal at the product detector (and any other mixers). Then  
>RF when you get past the first mixer (try each band).
>You find which sections don't work when he signal disappears then you  
>can figure what is broken in each section.
>On Aug 7, 2007, at 9:36 AM, Louis A. Ciotti Jr. wrote:
>> Thanks for the information.  I have located the manual which has a  
> schematic.  I guess I am going to have to dig in and start changing  
> parts.
>> I do not think I destroyed every IC as the radio powers up and the  
> remote digital readout I have for it works and shows the correct  
> frequency so some portion of it is working.  That and the fact that  
> I can still hear static if I turn the volume up to max means that  
> some portion of the receiver is working.
>> Thanks again, and keep the ideas comming.
>> 73
> Lou
> -----Original Message-----
> From: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
> Date: Tuesday, Aug 7, 2007 12:21 pm
> Subject: Re: [TenTec] triton 540 reversed polarity
> To: tentec@contesting.com
>> On Mon, 2007-08-06 at 21:24 -0500, Stuart Rohre wrote:
>> Reversal of DC polarity may have failed some electrolytic  
>> capacitors.  Also,

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