KX3 encoders

[Jerry Ford-3]

Good afternoon all:

Gang:       I need some advise from anyone familiar with the KX3
control board.

I replaced the encoder for  AF/RF on my radio and while doing that,
I managed to lift the trace that runs under that encoder.

Can anyone tell me where that trace goes ???

It run's under the encoder and the capacitors that are between Z2 and Z3.

I pulled up the schematic and that trace should be the SWCOM.  If that's
correct,  Then it's in series with pin 2 of all 4 encoders.  That being the
case,
it becomes an easy fix below the board.

Before I do anything like that,  I wanted to check with you guys and make
sure I'm correct.

Any advise would certainly be appreciated

73      Jerry       N0JRN
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[Don Wilhelm]

Jerry,

If some of the PC trace is left, just scrape that down to the copper,
tin it and solder a wire to the PC trace and the encoder pin.
Look for any evidence of a PC trace running on the other side of the
board to that same pin.  If there is, hopefully simply soldering on that
side of the board may be OK, but if not, a wire on that side of the
board may be necessary as well.

The board uses thru-plated holes which carry signals from one side of
the board to the other, some of which have components mounted in them.
If you lifted a trace, you likely also destroyed the thru-plating, so be
aware that you may have to do some repair on both sides of the board.

This is all just general information, I do not have the particulars of
the signal line in question.

73,
Don W3FPR

On 7/13/2020 5:17 PM, Jerry Ford wrote:

> Good afternoon all:
>
> Gang:       I need some advise from anyone familiar with the KX3
> control board.
>
> I replaced the encoder for  AF/RF on my radio and while doing that,
> I managed to lift the trace that runs under that encoder.
>
> Can anyone tell me where that trace goes ???
>
> It run's under the encoder and the capacitors that are between Z2 and Z3.
>
> I pulled up the schematic and that trace should be the SWCOM.  If that's
> correct,  Then it's in series with pin 2 of all 4 encoders.  That being the
> case,
> it becomes an easy fix below the board.
>
> Before I do anything like that,  I wanted to check with you guys and make
> sure I'm correct.
>
> Any advise would certainly be appreciated
>
> 73      Jerry       N0JRN
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]