[Elecraft] K2 super kit, but new problem !

[F5UL]

Hello the list !
I just finished K2 #4498. it was running all test in good condx and Rx and Tx where in the specs.
I let it in stand by this morning on 7 Mhz and sudenly I read HiCur on and off. I put down the power level and I still got HiCur any time I close the keyer or put it in Tune. Power level = 0 in display I = 2.45 A. with curent limit set @ 2.5 A, whenever I key it in tune or with the keyer.
First suspects the two 2SC1969. removed and changed for 2 others. No change ! 

And I forget the principal : reception is gone !!!

So please help !!! I will accept any informations !

F5UL/Robert