[Elecraft] [Elecraft-K3] K3s won't connect to PC

[tony.kaz at verizon.net]

Don, 
Using the K3 Utility is good advice.
Yesterday for some reason when I had updated WIN10, the one port changed numbers. And of all the ports I use for both K3's and all the programs and hardware, that was the only one that changed from 16 to 12. Go figure. Went into Device Manager and changed the port number back to what it was. Weird.
73,
N2TK, Tony

-----Original Message-----
From: Elecraft-K3 at groups.io <Elecraft-K3 at groups.io> On Behalf Of Don Wilhelm
Sent: Friday, March 22, 2019 11:05 PM
To: KE8G <ke8g.jim at gmail.com>; Elecraft <Elecraft at mailman.qth.net>; Elecraft-K3 at groups.io
Subject: Re: [Elecraft-K3] [Elecraft] K3s won't connect to PC

Jim,

It sounds to me like your computer has corrupted driver files - maybe caused by some glitch in the computer or its power.
Download and install the FTDI drivers.

Then disconnect (not just power them down) the WinKeyer and all other other gear.  See if you can connect using K3 Utility.  If so, start adding back your other gear one at a time and see when it fails.

If K3 Utility fails to connect, then an email to support at elecraft.com is in order.

73,
Don W3FPR

On 3/22/2019 8:15 PM, KE8G wrote:
> Hi All,
> Strange thing!  I was working a DX station and my PC locked up, and 
> kept sending my call sign.  The only way to stop the RF was to turn 
> the rig off.  I let it sit for a minute or two, then turned it back 
> on.  The LCD screen flashed a ERR PTT.  I disconnected the WinKeyer 
> and plugged it back in and was able to work the station with the 
> paddles, rather than N1MM+
> 
> Now, I can't get the K3s to connect to the PC (Win7 Pro 64bit).  It 
> shows as a unrecognized USB device in the Device Manager.
> 
> I have shut everything down, PC, K3s, WinKeyer and removed power from 
> all and let it sit for awhile.  The PC starts fine, the K3s starts up 
> fine (no ERR messages) and works well, the Winkeyer works fine.
> 
> I know the K3s was communicating with the PC earlier, as I was using 
> the K3 utility to set roofing filters I just installed in the sub receiver.

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