[Elecraft] Dead KAT500?

[paule408 at yahoo.com]

 I was careless when plugging in the 12V DC power to the rear of my KAT500 tuner and got a small spark when the DC power plug touched the tuner chassis. 
Now, the tuner wont power on but the two red LEDs on the far right side light up (#3 and Fault) when 12V DC is properly plugged in. 
Does this indicate a dead KAT500?  Is there anyway to recover without sending it in for repair?
Thanks,
Paul N6PSE