[Elecraft] K3 Fuse Blowing on Power Supply

[David Olean]

There is an over voltage protection diode inside. Maybe it was tripped? 
Easy to replace.. I think it is right rear when looking from the top and 
front of the radio. Just a short HV spike can trigger that diode. You 
can find it on the K3 schematic.

Dave K1WHS

On 5/6/2023 2:30 PM, Bill Gillenwater wrote:
> Current setup.
> K3 with P3 early serial. Back to factory for complete update. Gold 
> Pins etc.
> Today K3 shut down.
> Found blown 15 amp fuse in ground side of power supply cable
> Power supply is MFJ 4035MW.
> Have had no previous problems with this setup.
> Occasionally there was a message on the K3 saying LOW VOLTAGE.
>
> Thanks for ideas and assistance.
>
> 73 Bill K3SV
>
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