[Elecraft] Power problem

[Bill Turner]

My K3 has developed a power problem. I first noticed it on 20 meters.  
It would not reach 100 watts, but was stuck around 60 watts even using a 
dummy load, and the power would "pump" up and down about ten watts.

I then went through the power calibration procedure and it failed at 5 
watts with the error message "Calibration failed because the transmit 
power did not reach the expected level".

Time for a trip back to the factory?  Suggestions?

73, Bill W6WRT
dezrat at outlook.com