[Elecraft] K3 Bricked HELP!!

[RIchard Williams]

Bob,
If you are trying to use the USB port after a failed firmware update,   you need to either use the RS-232 port or take  the top cover off and the change the little switch on the board (can't remember the name of it)  the USB and RS 232 ports are on to USB position.  The you can use the USB port for a forced download. After you are done, move the switch back to the other position.
Dick, K8ZTT 

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  On Thu, Jan 24, 2019 at 13:34, Don Wilhelm<donwilh at embarqmail.com> wrote:   Bob,

Since you had an ERR PTT indication in the midst of all this, unplug all 
cables except the USB cable and the Power Cable.  Connect ANT1 to a 
dummy load.

Then open K3 Utility and open its Help file.  Look for "Force a Firmware 
Download" and follow those instructions (the instructions are also in 
the manual).

After you are again up and running, plug each of your cables in one at a 
time and recycle power after each cable.  If you see an ERR PTT, 
investigate that cable.  It could be as simple as a closed paddle or key 
contact, or a mic cable that has PTT stuck on.  Or it could be more 
complicated depending on what else you have in your station.

ERR PTT means that either a key or a mic PTT closure was detected when 
the K3 was turned on.

73,
Don W3FPR

On 1/24/2019 3:03 PM, Bob DeHaney wrote:
> Trouble started with no reception on 14 or 24 mHz.  Reloaded configuration file which got reception back, but had a continuous ERR PTT.  Attempted a complete firmware reload.  K3 hung at MCU LD with all buttons inoperative.  I then tried the recovery procedure in the K3 Utility Help section.  The K3 comes on without backlight, and transmit blinking and MCU LD in the display.  The K3 Utility cannot open the port.  I’m stuck.  This K3 has all K3S upgrades including USB, etc. I have also tried rebooting the computer with and without USB connected.
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