[Elecraft] K3 - Intermittents serial disconnect problem

[Mike Murray]

Thanks to Tom, Dick and all who offered suggestions, but nothing seemed to
cure the problem.  As a last resort I began troubleshooting the PC by
disabling all startup programs and selectively disabling non-Microsoft
services installed at boot time.  Although time consuming to re-enable them
(services) one at a time, reboot, and then test for the problem, it finally
appeared that a Malwarebytes Pro service was causing the problem.  An email
to their support yielded a quick response with a suggested fix to do a
clean uninstall, reboot, then a new install.  They provided the software to
make sure it was done correctly.  Lo and behold the problem is now gone.  I
can only conclude that there must have been some corruption involved and a
clean install corrected it.

Thanks again to all.

73,
Mike W0AG



On Wed, Jun 28, 2017 at 12:09 PM, Tom <tomb18 at videotron.ca> wrote:

> As Dick mentioned this is the most likely reason.  There is another power
> management setting that should be checked and disabled as well.  Open the
> device manager, and expand Universal Serial Bus Controllers.  In there
> there will entries such as Generic USB  Hub, USB Root Hub and each of these
> will also have power management settings.  It is best to disable power
> management there as well.
> 73 Tom
>
>
>