[TenTec] Omni 6 Plus: No RX or TX on 10 meters (Intermittent)

[k8mp at aol.com]

 In the old days we used glue Rick.


-----Original Message-----
From: Rick - DJ0IP / NJ0IP <Rick at DJ0IP.de>
To: 'Discussion of Ten-Tec Equipment' <tentec at contesting.com>
Sent: Mon, Jul 6, 2015 9:21 am
Subject: Re: [TenTec] Omni 6 Plus: No RX or TX on 10 meters (Intermittent)

 
 
 
Did you guys have solder back then, Jim? 
;-) 
 
73 - Rick, DJ0IP 
(Nr. Frankfurt am Main) 
 
 
-----Original Message----- 
From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Jim Allen 
Sent: Monday, July 06, 2015 2:47 PM 
To: Discussion of Ten-Tec Equipment 
Subject: Re: [TenTec] Omni 6 Plus: No RX or TX on 10 meters (Intermittent) 
 
I'm glad you found the fix. 
 
Why is it there are so many re-solder fixes these days.  I don't recall ever 
hearing about resoldering on the old gear.  Anybody ever have to fix a 75A4 
or SX101, etc. by resoldering some connections? 
 
73 de W6OGC Jim Allen  
 
Sent from my iPad 
 
> On Jul 6, 2015, at 7:39 AM, Joe Papworth via TenTec 
<tentec at contesting.com> wrote: 
>  
> It appears to be fixed and in repairing it, I fixed another annoying 
problem, which was spurs and floaters on ten meters only. Those had been 
plaguing me for several years. 
>  
>  
> First, thanks to Paul at Ten Tec for pointing me in the right direction 
and to Mark, K8VF, and others for their suggestions. 
>  
>  
> Paul was right. The problem was on the Xtal Osc/LO board. The repair 
process went like this: 
>  
>  
> 1) I looked at the schematic of the board and saw there are 4 separate  
> xtal ? ? oscillators for ten meters (I assume one for each 500 Khz  
> band segment) ? ? Since I was losing the entire band, I knew it wasn't one 
of those circuits.? 
> ? ? That eliminated a lot of circuitry as a possible cause. 
>  
>  
> 2) After reading the theory of operation, I pretty much narrowed things 
down ? ? to the L9, L10, and L11 circuits, plus the Q4 and Q5 circuits. 
>  
>  
> 3) I resoldered every component in those areas and voila, no more  
> spurs or ? ? floaters and so far, RX and TX are fine. (I'm fairly  
> certain the rig would ? ? have failed?by?now) 
>  
>  
> Later, Joe 
>  
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