[Elecraft] K3 - ATU Tune

[L. D. Ingram]

Hi,

Something curious has happened to my K3 SN 3975 - when I tap the ATU 
Tune button the power out shown on an external power meter is full 
power, a little over 100W. The K3 power out indicator also kicks up 
to full power. I have the unit set to 50W and when I key it normally 
(CW) it shows 50W on both the external and internal meters. The SWR is fine.

Any thoughts on anything I might have done to cause this?

Larry Ingram  AG4NN