Send it into Elecraft as I did... I sent my rig in 20 or so months ago
to get them replaced.
If you do take the front panel off, tighten the mic plug... :)
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 8/4/21 9:59 AM, Nick Kennedy wrote:
I'm in the process of replacing the four encoders to the left of the main
VFO knob and wonder if anyone has any advice or pep talks to offer.
The encoders in my summer 2008 vintage K3 degraded to the point where they
often count backwards, making adjustment of CW speed or power out difficult.
I've purchased four replacements from Elecraft and have been working up my
courage and taking deep breaths. Getting to the board is a fairly
complicated first phase. I had an Elecraft document on installation of an
audio LPF on the DSP board and found it to be very useful in this process.
Of course the original assembly manual is also useful.
Now I've got the K3 apart to the point of allowing access. The upper two
encoders have terminals located beneath an LED mounting board and are
almost impossible to access from the top. I may stop after replacing the
lower two, assuming I'm successful with them.
My usual method involves solder wick plus flux. Sometimes I find ChipQuik
to be very helpful in allowing me to remove a part without getting rid of
all the solder. In this case though, using ChipQuik would require heating
seven joints simultaneously which I haven't been able to do.
There's also an issue with mounting the encoder at the correct height so
the shaft switch can be operated. So I'll try to match the height of the
new shaft end to that of the existing encoders.
I found one website which is somewhat helpful discussing this task:
https://www.n5na.net/s9y/index.php?/archives/26-Replacing-Elecraft-K3-Push-Button-Encoders.html
I'm keeping a lot of notes. Anyone planning to attempt this job is welcome
to them.
73
Nick, WA5BDU
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