I had exactly that same problem, Ed, and I also first thought it was the
USB/RS232 cable (which it wasn't). I also do not need the direct USB
connectivity, or the associated internal sound card. Luckily, I was able
to buy replacement boards from someone who had done the upgrade to the
KIO3B for another ham and still had the old boards, one of which ... the
audio board ... was itself bad but at least the RS232 board was good.
Problem fixed.
In my case, the KIO3A apparently was damaged by a line transient that
came in via the laptop that was connected to the USB/RS232 line. Most
everything was disconnected at the time, but that line wasn't.
I had sent an email to Elecraft technical support when I first had the
problem, asking whether or not they had replacement boards or whether
they could fix the KIO3A. The tech didn't bother to answer either of
those questions and simply replied with a rather curt "just upgrade to
the KIO3B ... you'll be happier".
Somebody could probably make a small business gathering various older
K3/K3s boards from folks who had done various upgrades in order to
service users like us who can't get help anymore from Elecraft.
73,
Dave AB7E
On 9/14/2020 1:43 PM, Edward R Cole wrote:
My K3 SN 4340 bought in 2010 apparently has a failure in the RS232 I/F.
My computer says the FDTI cable is working and using com port-6 but
there is no connection using the K3 Utility or WSJT-X which was
running fine in July. The radio no longer keys up on computer boot-up
as before. I bought another FDTI USB/RS232 conversion cable and it
does not work wit the K3, either. I checked the com port and cable
via Device Manager and both are shown as working with no problems. I
even used my second computer to test the cables (also showing working
well). Computers are i5 running win10pro64.
I contacted Elecraft Service Dept on Friday so waiting to hear back
from them.
I gave a passing thought to just upgrade to the KIO3B but it totals
$437.80 before shipping. I don't really need the USB I/F for my use
of the K3. I use two com ports to support control of the K3 (I won't
bother you with details) to run MAP65 and TRAKBOX programs
simultaneously. But just have the single com port recently in use
with WSJT-X.
I guess I wonder if anyone else has had this failure?
73, Ed - KL7UW
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