[TenTec] Omni-D troubleshooting

[Carl Moreschi]

The 80 meter problem of going to 1.0000 mhz sounds like the 80 meter 
band crystal may need to be reseated.

The other problem sound like the RIT pot is intermittent.  I would move 
the RIT pot back and forth many times and maybe even spray it with a 
good contact cleaner.

Carl Moreschi N4PY
58 Hogwood Rd
Louisburg, NC 27549
www.n4py.com

On 1/12/2015 9:43 AM, Chris Howard w0ep wrote:
>
> Hi,
>
> A few months ago I bought an Omni-D with power supply from an e-bay seller.
>
> I have been using it, and I enjoy it.
>
> It is exhibiting a constellation of faults which I need to repair.
>
> I would like to run them by the group to see if there is some
> common wisdom about them.  It may save me some time if I can target
> my efforts.
>
> 1 - frequency drifting and jumping
>       This seems to happen on both transmit and receive.  Multiple bands.
>
>       The amount of drift is about 1-2 kHz.  It will usually drift downward
>       then jump up.  This happens when I am not touching any controls.
>
> 2 - frequency loss
>      I have only had this happen on 80 meters.  The frequency will jump
>      much farther and/or the display will go to 1.0000
>
> 3 - low output
>      Output while transmitting will fluctuate.
>
> All of these problems seem to go away if I let the radio warm-up for an
> extended period.
>
> My main tuning knob seems to turn easily enough, and all of the other
> controls seem to work ok.  I don't notice any improvement or change
> by jiggling the bandswitch knob.
>
> My only attempt at repair, so far, has been to remove the top and bottom
> covers and re-seat all of the circuit boards I could find that had
> the pin connectors.  I did that yesterday, but still experienced
> drifting/jumping afterwards.
>
>
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