[Elecraft] K2 VFO encoder / control board close fit

Don Wilhelm donwilh at embarqmail.com
Tue May 8 23:20:45 EDT 2018


Mark,

Put the plastic sheet in anyway.  In your case, it may be overkill (good 
job on flush cutting BTW).

73,
Don W3FPR

On 5/8/2018 10:26 PM, Mark Petrovic wrote:
> Don, thank you.
>
> With some copper braid solder wick to remove a bit of the fillets on 
> the joints on both boards, and after using my new Xcelite 170M shears, 
> the control board can be secured without an insulating sheet between 
> it and the front panel board.  I may still use that sheet of plastic 
> there, but the new configuration is /much/ better than when I first wrote.
>
> Mark
> AE6RT
>
> On Sun, May 6, 2018 at 7:27 AM, Don Wilhelm <donwilh at embarqmail.com 
> <mailto:donwilh at embarqmail.com>> wrote:
>
>     Mark,
>
>     The instructions packed in the encoder envelope tell you to flush
>     cut not only the pins on the encoder board, but also the leads on
>     the control board that might contact it.
>
>     If you do not have flush (or shear) cutters, and want inexpensive
>     ones, look for Xcelite (or Lufkin or Cooper) 170M shear cutters. 
>     They can often be found in your local Home Depot.
>
>     In addition to flush cutting the boards, put something on the back
>     of the encoder board - fish paper would be best, but a piece of
>     flat plastic cut from one of the many plastic wrapped consumer
>     products would be good.
>     Paper or electrical tape will eventually puncture.
>
>     73,
>     Don W3FPR
>
>
>     On 5/5/2018 10:58 PM, Mark Petrovic wrote:
>
>         While performing the initial power on tests on my K2 S/N 7809,
>         I noticed
>         that the VFO knob/display tuning test produced a sluggish,
>         intermittent, or
>         no change in display when I turned the knob in either direction.
>
>         I proceeded to remove the two chassis screws securing the
>         control board to
>         the front panel board.  This allowed the control board to
>         relax and
>         slightly fall away from the front panel board, toward the back
>         of the
>         radio, opening up the space between the front panel encoder
>         board and the
>         control board. The display was at once responsive to knob
>         turning on all
>         RATE settings.
>
>
>
>
> -- 
> Mark



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