[TenTec] Corsair 2 RX issue

[Bryan Lee Cornwell]

Hi Shawn

It may be as simple as a dirty slide switch on the rear panel. It may be 
marked TRX/RX. A few drops of DeOxit may help

73

Lee K2BLC


On 9/15/2022 8:06 AM, Andrew Moore wrote:
> Hi Shawn -
>
> The symptoms you describe aren't the same as what I ran into with my
> Corsair II (jumpy VFO) but might be related. I'm almost certain the fix
> here was exercising variable resistor R29 on the oscillator/mixer board
> (80975). I think got crusty and oxidized over the years. It's part of a
> bias circuit for some bands. This includes 20 meters, so again, might have
> nothing to do with your issue, but it's an easy fix to try.
>
> Locate 10K potentiometer R29, and put two marks on it - one on the moving
> part, one on the static part - so you can put it back where it started. Run
> the pot back and forth a bunch of times and return it to the original
> position.
>
> 73 de NV1B
> ..
>
>
> On Wed, Sep 14, 2022 at 10:58 PM Shawn Upton via TenTec <
> tentec at contesting.com> wrote:
>
>> I do mostly 40m CW, and sometimes I have issues with RX.  It will just
>> fade away.  I tap the key and it comes back.  few seconds later, it fades
>> away...
>>
>> Thing is, it will not do this cold.  Sometimes it won't do this for an
>> hour.  Then do for a few minutes, then work its way out of it.  Other times
>> it seems to keep doing it once it starts.  Sometimes it will just do it to
>> annoy me...  I don't work other bands all that much but I don't think it
>> did it the other weekend on 20m, but maybe it was just in a good mood.  I
>> tried wiggling the band knob tonight and that did not seem to help when it
>> was acting up.
>> I haven't looked at the schematic but I'm guessing the TX/RX relay is on
>> the way out.  But wondering if anyone else has seen this and has advice.
>> Thanks,Shawn kb1ckt
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