[Elecraft] K3 Stuck in MCU Load - SOLVED

[Mike Cizek W0VTT]

Many thanks for all the replies.  K8ZTT had the correct answer and I am now
up and running again.  

--
73,
Mike Cizek WØVTT 
________________________________________
From: RIchard Williams [mailto:richarddw1945 at yahoo.com] 
Sent: Saturday, September 29, 2018 19:21
To: mgcizek at gmail.com; elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 Stuck in MCU Load

IF you are using the USB connection to the computer, you need to either
switch to the RS 232 port and use that;  OR take the cover off the K3 and
move the little slide switch on the KIO3B board to the opposite position. 
You can then use the USB method.   After you have re-installed the firmware,
move the switch back to the other position.

IF your KIO3B board does not have the small switch,  it is an older board
and you have to use a RS232 cable.  Check with Elecraft, and they will
probably switch boards to the newer one with the switch.

I had the same issue awhile back.

Dick, K8ZTT

Sent from Yahoo Mail on Android

On Sat, Sep 29, 2018 at 11:45, Mike Cizek W0VTT
<mgcizek at gmail.com> wrote:
Greetings - 

I appear to have really #@(*)(*%&ed up my K3.  While updating the firmware,
I accidentally hit either a key on the computer keyboard or one of the mouse
buttons.  The K3 Utility window "grayed out" and the K3 is stuck in MCU
Load, no backlight, TX LED flashing.

Setup: Astron 50A PSU; K3 # 2768 with new KIO3B board; direct USB connection
to Lenovo Thinkpad running WIN7 Home Premium; K3 Util v 1.16.7.25.  Computer
and K3 Utility both recognize the COM port; latest FTDI drivers installed.

Yes, I know there is supposed to be a cure for this, but it didn't work.  I
tried:

1. Restarting both the computer and the K3 a few times.
2. Remove & reconnect power supply from K3, hold POWER button to force it
into bootloader mode. (which it is already in)
3. Factory reset (power on while holding SHIFT/LO button). Never got the EE
INIT message.
4. Uninstall and re-install K3 Utility and try 1-3 again.
5. Uninstall and re-install front panel assembly; try 1-3 again.

K3 Utility is still trying to connect and the TX LED is still flashing.  Any
ideas before I call tech support on Monday?  Thanks.

-- 
73,
Mike Cizek WØVTT

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