[Elecraft] Help -- stuck in MCU LD

[Grant Youngman]

Done several times.  NO change.

Except now, I can test the port and got a good test at the right  
speed.  The TX LED goes out, and the delta-F led comes on solid.  WHen  
I try to upload firmware I get "K3 not responding".  So it responds,  
then it doesn't.

I don't have a good feeling about this.  Don't believe it's the  
computer port.  It seems to be the radio.

It's the Mac version of the Utility.

Grant/NQ5T


On Dec 10, 2008, at 11:32 AM, Greg - AB7R wrote:

> Grant,
>
> Sounds like the communications with the COM port were lost.  Shut  
> down power on the
> radio...unplug the power cable if necessary and the RS232 cable.   
> Reboot your computer.
> Reconnect the RS232 and power cable and start the utility program.   
> Make sure its set for
> 38.4K baud rate and click the button on the ports tab to test  
> communications.  Then try to
> load the firmware again.
>
> -------------------------
> 73,
> Greg - AB7R
> Whidbey Island WA
> NA-065
>
>
> On Wed Dec 10  9:21 , Grant Youngman  sent:
>
>> Trying to put in 2.72.  Something crashed and caused a loss of
>> communication the initial attempt, and the radio is stuck in MCU LD.
>>
>> Went through the procedure for forcing  bootloads in the manual --  
>> can
>> get to the red flashing TX LED, with MCU LD in the display (no
>> backlight).  But nothing past that.
>>
>> Here is a sample of the Utility (1.1.10.17)  log:
>>
>> 11:10:24 K3 boot loader is ready for MCU firmware load. RS232 38400  
>> bps.
>> 11:10:24 New firmware is available for your K3
>> 11:10:29 K3 boot loader is waiting for MCU firmware load.
>> 11:11:01 K3 boot loader is waiting for MCU firmware load.
>> 11:11:12 K3 boot loader is ready for MCU firmware load. RS232 38400  
>> bps.
>> 11:11:12 New firmware is available for your K3
>> 11:11:30 K3 boot loader is ready for MCU firmware load. RS232 38400  
>> bps.
>> 11:11:30 New firmware is available for your K3
>> 11:11:35 K3 boot loader is ready for MCU firmware load. RS232 38400  
>> bps.
>> 11:11:35 New firmware is available for your K3
>> 11:11:46 K3 boot loader is waiting for MCU firmware load.
>> 11:12:25 K3 boot loader is waiting for MCU firmware load."
>>
>> It just sits at the "... waiting for MCU firmware load" point and
>> nothing happens.   The port checks ok, with good communication to the
>> radio.  No yellow flashing led, ever.
>>
>> Is there some other way to hard reset this thing to get it moving?   
>> Or
>> something else I missed in the manual?
>>
>> Grant/NQ5T
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