Another possibility is that the plastic nut that holds the encoder shaft
collar to the small PCB is overtightened.
My understanding is that Ten-Tec no longer has original encoder
replacements and they would want to replace all the encoders at the same
time because the shaft lengths of the new encoders they use is slightly
different than the original.
I ended up doing it myself (all six on the Orion) and did a write-up at:
http://www.tentecwiki.org/doku.php?id=565enc using $1.85 Bourns encoders
from Mouser.
I replaced them all and I'm not sure whether the replacement encoder shafts
were the exact same length, but they were close. My replacement encoders
had detents because the Bourns encoders without detents are not readily
available in the US. The issue with detents is that the Ten-Tec firmware
detects on multiple transitions per detent so you have to turn carefully
between detents (it's possible) to get very small changes in settings.
73, Barry N1EU
On Sun, Nov 15, 2015 at 4:03 AM, N4IJ . <dougn4ij@gmail.com> wrote:
> In an earlier post today I said the RF gain / AF gain contro on my OMNI VII
> was frozen. Took the radop aart and doscpvered that the rf gain control is
> actually an encoder - and it is mounted on a small PCB that includes the
> MULTI control, PB control and RF/AF control. Now I need to either find out
> what the encoder art is (no part number n it or get one from TT. Actually
> the PB tuning does not push in and release very wel, so maybe just get the
> whole board. Anyway that is the story on that.
>
> Doug N4IJ
> _______________________________________________
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> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
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