[Elecraft] Still blank display

[Ron D'Eau Claire]

R Kevin Stover wrote:

...If some of you will recall, I picked this up with the front board and
control board complete.  I carefully (or so I thought) retraced every step
in the manual and am up to phase 1 of the testing and calibration...

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Was the MCU (U6) installed in that control board when you received it? 

If so, the entire board needs to be treated as an "ESD Sensitive" device
since a number of the pins on U6 are hanging open at the connectors when
it's out of the K2. And ESD damaged chip will produce all manner of weird
results. Indeed, U6 might not be the only IC exposed to that sort of failure
with the board unplugged. A treat the boards just like I would any sensitive
chip when they are unplugged. 

Don't forget, you have Elecraft service to lean on if you choose. Gary has
all the resources to check and debug the board.

Ron AC7AC