[Elecraft] K2 #5723 is alive but got a few problems

[KU4YP]

Hello all

	Well, k2 5723 is alive, but I have a few snags. First, No smoke, and
about 10 watts +\- on all bands except 40m. no output on 40. Display says "
high current " and shows no rf output on meter on 40 m. but I was stupid and
handled a plug for the cw key over the rig without the cover. Blew the fuse
on the power line when the plug dropped onto the board and I think took out
one of the PA transistors, the one closest to the back of the rig. Replaced
the fuse, On all other bands, I can get 5 to 6 watts MAX out on all bands
except 40m. still no rf output. Also, all bands now give the hi current
message on the display. 

        I am learning as I go here so could someone please explain how I can
confirm if one of the Pa transistors is bad? Looking for suggestions and
procedure.  

        Tnx and 73 mike ku4yp