[Elecraft] KPA100 resistance check shows negative resistance

[Andrew Moore]

>
>Performing the resistance checks on page 41 just after assembling the KPA100
>board to the heat sink, I find a NEGATIVE resistance ( -2 meg) on my DMM at
>the J3 + lead.  Further checking shows a persistent voltage of -0.35 volts
>at that J3 + lead with no power connected to the board.

The only time I saw something similar during assembly of my K2 (this
was a low or negative voltage on the bias voltage area for a power
transistor or something like that -- my memory is fuzzy) it was
due to an unsoldered (or bridged?) VCC or -VDD pin on one of
the IC's.  Double check +pwr, -pwr and gnd on all your IC's.  Quick test
and more than likely 1) you've already done this or 2) it's unrelated
to the problem, but it just rung a bell so I thought I'd mention it.

--Andrew