[Elecraft] KIO3B usb com port not communicating

[Don Wilhelm]

Raj,

Don't overlook the possibility that the RJ-45 jack could be damaged.
If you have ever accidently plugged the USB cable into that jack - it 
almost fits, but will damage the RJ-45 jack.

73,
Don W3FPR

On 7/19/2019 2:32 PM, Rajiv Dewan wrote:
> Hello all, especially Don,
>
>  The last tip helped make progress.  I unplugged the P3 connected via 
> the RJ45 jack and suddenly my USB/CAT came back to life.
>
>   And, this disruption is repeatable.  Plug the P3 back and again it 
> stops working.  Unplug, works again.
>
>   Now, I will look to see what is up with the P3.  I checked the 
> firmware on the P3.  It is running the latest.
>