[Elecraft] PX3 / KX3 USB Problem

[James Bennett]

> On   Thursday, Jun 25, 2015, at  Thursday, 3:42 PM, Alan <n1al at sonic.net> wrote:
> 
> Jim,
> 
> I would try the following troubleshooting procedure:
> 
> Connect the "XCVR" ACC1 RS-232 jack on the PX3 to the ACC1 jack on the KX3.  Turn them both on.  If the KX3 and PX3 work normally together (PX3 reads KX3 frequency on the screen, etc.) then the "XCVR" RS-232 port on the PX3 must be OK.
This works as expected. PX3 follows KX3 frequency, and the MRKR A QSY function works.
> 
> Now connect the PC to the "PC" ACC1 RS-232 port on the PX3 and turn off the PX3.  If KX3 Utility can connect to the KX3, then the cables and connectors must be good.
That works. the KX3 Utility is happy.
> 
> Now "without touching anything" turn on the PX3.  If:
> 
> - KX3 Utility can't connect to the KX3 and
KX3 utility not happy - can't see KX3.
> 
> - PX3 Utility can't connect to the PX3,
PX3 utility also unhappy.
> 
> then it sounds like the "PC" RS-232 port on the PX3 must have died somehow.
Yep. Not good. And I don't have any spares! :-( 

I just a few minutes ago posted about a quasi-workaround I came up for FD, but methinks Mr. KX3 is headed for surgery next week....
> 
> Alan N1AL
> 
> 
> On 06/25/2015 09:37 AM, James Bennett wrote:
>> Have a KX3 and PX3 that have been working fine - until this morning.
>> Today I am unable to have the KX3 connect to my computer if the PX3
>> is powered on. If I turn off the PX3, the KX3 serial - USB
>> connections works fine. As soon as the PX3 is powered on, the
>> connection goes away. I'm using Elecraft-supplied cables, not
>> off-brands. The PX3 Utility cannot connect to the PX3 with the KX3 on
>> or with it off. Other than the connection to my iMac being hosed, the
>> PX3 and KX3 appear to be working just fine.
>> 
>> Any suggestions how to determine what's going on?
>> 
>> Tnx, Jim / W6JHB
>> ______________________________________________________________
>> Elecraft mailing list Home:
>> http://mailman.qth.net/mailman/listinfo/elecraft Help:
>> http://mailman.qth.net/mmfaq.htm Post:
>> mailto:Elecraft at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net Please help support this
>> email list: http://www.qsl.net/donate.html Message delivered to
>> n1al at sonic.net <mailto:n1al at sonic.net>
>> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft <http://mailman.qth.net/mailman/listinfo/elecraft>
> Help: http://mailman.qth.net/mmfaq.htm <http://mailman.qth.net/mmfaq.htm>
> Post: mailto:Elecraft at mailman.qth.net <mailto:Elecraft at mailman.qth.net>
> 
> This list hosted by: http://www.qsl.net <http://www.qsl.net/>
> Please help support this email list: http://www.qsl.net/donate.html <http://www.qsl.net/donate.html>
> Message delivered to w6jhb at me.com <mailto:w6jhb at me.com>