[Elecraft] K2 - Q7 and Q8 failure

[K and K Stuber]

While operating my K2 (SN 7581) on CW I heard a loud pop! I traced it to
blown Q7 and Q8. They are physically blown apart. The K2 was operating
normally before this happened. Everything else seems to be OK except for no
power output. The driver seems to be working; I can key the radio and hear
it in another RX. The K2's RX is working normally. Any thoughts as to why
this happened would be appreciated.

Ken/N4KS