Had the same thing a few years ago. I plugged the PP into the K3 only it was
offset a bit. Nanacged to get the cable Red on the K3 Black. Smelled smoke (P3
cable insulation) and blew L1 on the RS232 circuit.
Sent from my iPhone
...nr4c. bill
> On Sep 18, 2020, at 8:31 PM, Edward R Cole wrote:
>
> Working with Rob at Elecraft Service, I removed and checked the KIO3 Digital
> I/F board and found L1 blown. L2, L3, R12, and R13 are all good. L1 is on
> the ground lead from the sub-D9 connector, pin 5 to ground in the K3.
> Definitely blown as there is a carbon smudge next to L1. I installed a wire
> jumper but still inoperational.
>
> Going to return the entire KIO3 unit to Elecraft for repair.
>
> 73, Ed - KL7UW
> http://www.kl7uw.com
> Dubus-NA Business mail:
> dubus...@gmail.com
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