[Elecraft] K2 Was Fine Now Dead - getting interestring?

[Don Wilhelm]

Allan,

Fine that you found it - somewhere along the line, the base K2 was 
drawing excessive current and the trace acted like a fuse.  I can't say 
what the original problem was - maybe the power connector was plugged in 
backwards, or something 'dumb' like that.

In any case, it is a simple matter to remove the delaminated PC board 
trace and any charred material then repair it with wire.  I would 
recommend that you use #20 or larger wire for that replacement trace (or 
use 2 pieces of #22 side by side).  If you use bare wire, you can dress 
it along the old path and encapsulate it in a small bit of epoxy which 
will also glue the wire down to the board - it will be just as good as 
new (you can even color it green with a permanent marker and few folks 
will spot the repair).

73,
Don W3FPR

Allan Bacon wrote:
> Don,
> Thanks for your help. When I checked for continuity between the cathode of
> D10 and the anode of D9 it came up negative - problem.
> 
> So I temporarily jumped the cathode of D10 and the anode of D9 and the rig
> powered up correctly.
> 
> Then I took the heat sink off and I see trouble, not sure if these are the
> right words, but it is what I see.
> 
> The board between D9 via R-14, R-13, FRC-11 almost to R7 is delaminated, no
> green material, just copper and there is evidence of charring.
>