[Elecraft] K3 High Current Warning on 10m

[Bryan, ZL1NI]

On 28.010 while in Tune a high current warning came up then a 15A fuse 
went in my Astron power supply. My MFJ-259 shows SWR less than 1.5 at 
this frequency. The antenna is a new SmallIR.
I have since operated my FT-897 on the same antenna and frequency. I can 
key down at 100W as often as I like and for as long as I like and 
nothing bad happens. Rig indicates a low and stable SWR putting out 100W.
This seems to suggest something related to the K3. Has anyone else 
experienced this?

Bryan, ZL1NI