[Elecraft] K3s won't connect to PC

[Don Wilhelm]

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.