[Elecraft] [K3] S/N3050 RS232 port has no response

[je1trv at a1club.net]

Dear Elecrafters!
Since few days ago, my K3 (S/N3050) has no response from its RS232 port.
First no frequency data became obtained by Logger32.
Then, I tried to connect by K3 Utility, I tried port refresh, port
test,etc. But no reply from the K3.
I confirmed K3 Utility program is sending polling signal to K3 RS232 port
but seems no reply from K3.

I use USB/RS232 converter between P/C and the rig.
I changed the connection with other rig such as FT-2000, and it works
without problem using same com port, so that I'm sure the RS232 of K3 is
something wrong.

I'm afraid if K3 got a kind of surge damage because we had a bad wx with
lightening just before the reported malfunction occur.

I posted same question to tech support but if anyone had same problem
please advise how to fix this problem.

vy 73
Atsu, JE1TRV from Tokyo Japan