[Elecraft] #3421 MCU problems?

[Daniel Reynolds]

Dear Elecrafters,

I had left my rig on over night, and this mornings ice 'storm' brought a few strokes of unexpected lightning to the area. Now my K2 (with KSB2, KNB2, KAT2) is constantly transmitting dits with both mic and key removed. I'm afraid it might be the MCU. Is this problem 'resetable', (I can't seem to make any buttons work while it is transmitting - and it IS transmitting - verified by nearby receiver feeding K2 into dummy load), OR will I need to replace the MCU?

Thanks,
Daniel
AA0NI in icy Oklahoma City