Don,
That state (MCU LD and red TX light blinking) is typical when some
glitch occurs between the computer and the K3/K3S during a firmware load.
Turn the manual (or read the K3 Utility Help) section on "Force a
Firmware Download". Follow those steps and you should find success.
If the original error is still present contact Elecraft support.
73,
Don W3FPR
On 11/14/2019 9:57 AM, Don Pomplun wrote:
A few days ago I noticed that when I powered up my K3S (ser #11141) I
would briefly get an Err DSE message. The manual says I should reload
the firmware via the K3 Utility program (like I've successfully done in
the past when a new version is available). But this time when I click
Send All Firmware to K3, I get this:
Elecraft K3 Utility Revision 1.16.7.25
OS Version 6.1 Build 7601 Windows 7
K3 MCU revision ??.??. RS-232 speed 38400 bit/s.
Sending firmware file C:\Users\K2BIO\AppData\Roaming\Elecraft\K3
Firmware\hmcu0567.hex to MCU
/(5-10 second pause, then)/
Error code 0xE2000048: No response to poll while synchronizing to buffer
boundary
MCU verification failed. Reload MCU.
Click "Close" to close this window
I disconnected the Power Pole connector for a few minutes, then powered
it up again. After the front panel LEDs flash briefly, the screen says
MCU LD and the red TX light is flashing. Trying this again many times, I
get the same message.
Then I noticed that with _no power to the K3S and the USB cable between
the K3S and the PC unplugged_ at both ends, when I start the K3 Utility,
and click /Send All Firmware to K3/, I get exactly the same error
message as noted earlier (with nothing connected). Thinking maybe the
problem is with the K3 Utility, I deleted it from the PC and reloaded it
from the Elecraft site and reinstalled it. Same problem!
It appears that even after a long power-down, the K3 processor isn't
resetting. Looking for suggestions!
TIA
Don K2BIO
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