[TenTec] Orion 565 tuning encoder

[Barry N1EU]

There's 0.5-0.6V drop between the A9 board and the encoder on the front
panel board.  Isn't that excessive?  Also, the voltage at the encoder seems
to vary over time 4.3-4.5V.  I wonder if there could be a bad +5V
electrolytic filtering cap on the front panel board.  I believe the +5V
comes over in the ribbon cable and is then filtered on that top dsp logic
daughterboard and passed to the front panel board and encoders below it via
the stake pin connectors.

Barry N1EU


On Sat, Jun 21, 2014 at 10:08 PM, shristov <shristov at ptt.rs> wrote:

>
> Barry N1EU <barry.n1eu at gmail.com> wrote:
>
> > I measure 4.9V on the A9 board.  I flipped the rig over and now I'm
> > measuring 4.3V on the encoders (?!).  Not sure what's going on.  vfoA
> > encoder is still working fine.
>
> Could you power the VFO B encoder by external +5.0 V?
>
> 73,
>
> Sinisa
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