[Elecraft] Help needed with KPA100

[Phil Wheeler]

Todd Gahagan wrote:

>I got to the point in construction where the KPA board is connected to the
>K2 via the ribbon cable.  The K2 won't see the amp.  I have checked voltages
>on the ICs contained on the amp board and all are proper.  All resistance
>checks were also proper.  I don't have the correct firmware for the SSB
>board but that is on its way from Elecraft.  I don't believe that could be
>the cause.  I have checked for bad solder joints, improper component
>placement, etc. The secondary menu in the K2 firmware shows the PA setting
>with two dash marks behind it indicating that the PA is not present. 
>

Todd,

The troubleshooting sectin for the KPA100 says if PA menu parameter is 
missing:

o Make sure U1 of PA is not installed backwards
o Check all U1 voltages (two extensive tables at the end of the manual)
o Check the ribbon cable for continuity

73, Phil