[Elecraft] [K3] KIO3 failure mode

[Nick - WB5BKL]

What Dave said.  Almost identical here.

Now, during t-storms, the K3 is a box sitting on the desk with 
_nothing_  repeat _nothing_ connected.  If I thought wrapping it with 
tinfoil* would help...

cln - Nick
WB5BKL
Lake Buchanan, TX

*  One of my neighbors has a plentiful supply.



On 8/24/22 11:49, elecraft-request at mailman.qth.net wrote:
> Message: 9
> Date: Tue, 23 Aug 2022 14:47:24 -0700
> From: David Gilbert<ab7echo at za*****.com>
> To:
> Subject: Re: [Elecraft] [K3] KIO3 failure mode
>
>
> When my KIO3 got zapped, I had everything disconnected.? Antenna and all
> accessories from the K3 ... power supply as well.? The one thing I
> didn't have disconnected was the RS-232 link between the laptop and the
> KIO3.? Somehow a transient from a nearby lightning strike (not a direct
> one to my tower) traveled through the laptop power brick and to an
> otherwise completely floating K3.? If I remember correctly, the laptop
> power supply was even plugged into a quality surge protected UPS.
>
> It takes very little to zap the KIO3.? I now disconnect EVERYTHING in
> the shack during lightning season.