Don't feel bad Ian. I reversed the polarity from the power supply, too.
After the smoke cleared and the smell went away, I called Elecraft
and after a few questions, service said send in my KX3. They called in a
couple days to thank me for sending the melted wire, but why did I send
the KX3, which was fine? They apologized, checked out the KX3, and
gave me a free replacement wire. Great company!
david, KC1DNY
On 9/5/2020 10:06 AM, Ian Liston-Smith wrote:
Well I did it. Inadvertently got the +ve and -ve reversed. Loud buzz from PSU
and smoke from KX3.
Surely D6 in the volts input should just stop everything from working if the
polarity is reversed? So I don't understand what has happened.
I didn't actually switch it on so hopefully it isn't terminal and just enquires
a new diode. If it is terminal, I'm really surprised it hasn't any protection.
Ian, G4JQT😒😭
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