[TenTec] Omni VI opt 3.... PLL problem fixed

[Jim Goudie]

Hello all,

Reporting back a while after my last attempt to fix my Omni VI (see below).  The Omni sat here for a while waiting for me to have the gumption to attack the problem again.  Yesterday I finally pulled the PLL board again from it’s hidden cave.  My resolve was to go ahead and re-heat/re-solder all of the connections on that board; one of the suggestions I received via email.  Unlike the experience shared below, back in January, this time the PLL has been rock (lock) solid.  Success!

Thanks for all the suggestions and help!  I wanted to share ’the rest of the story.’
73,
Jim  AF3Z

P.S. Somehow now, when I push the CW botton to hear the sidetone, I get two tones:  the sidetone frequency and a second one.  The frequency of the new tone depends on the setting of the RIT.   Very interesting ;-)

Jim Goudie   —  jagoudie at comcast.net
610 Kraybill Church Rd
Mount Joy, PA 17552

> On Jan 27, 2022, at 8:05 PM, Jim Goudie <jagoudie at comcast.net> wrote:
> 
> Hello,
> 
> [ I sent this a day ago….  and it never appeared, so trying again ;-). ]
> 
> I have an option 3 Omni VI that has developed a gargley warbley wobbly intermittent sound heard on Tx and RX, and I also hear it on the 5-5.5mhz PLL signal.  At times, that ‘noise’ seems to be affected by mechanical bumps and repositioning the chassis.   So, I opened things up…. “exercised connectors,” cleaned up and re-soldered areas on the PLL board that looked suspicious, and didn’t find much else.  Before going deeper, I decided to put it back together and see if my initial work had solved the problem.
> 
> I was very encouraged for a while.  I was even tweaking the alignment before planning to put it back in the case.   But then…. it warbled again.  It seems to be making the noise less often so far, but ...
> 
> Any advice/experience with what might be wrong or how to proceed?  There’s no direct access to the 5 mhz PLL board during normal operation…  So… I’m open to suggestions…
> 
> Thanks,
> Jim  AF3Z
> 
> Jim Goudie   —  jagoudie at comcast.net
> 610 Kraybill Church Rd
> Mount Joy, PA 17552
> 
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