[Elecraft] K1 band change Issue

[William LeComte]

I purchased a used pre-built K1 from a friend with a known issue in the 4
band module. My 4 band module covers 40, 30, 20, and 15 meters but 30
meters does not function.  What I observed is when the Band switch is used
to cycle through the bands 30 meters does not show up in the display, but
20 meters appears to show up twice.  One of the appearances of 20 meters
functions, but the other does not, which is likely 30 meters not being
recognized and showing up as 20 meters.  Any suggestions as to what would
cause 30 meters to not be recognized?

Bill