[Elecraft] K2 thermistor board check

[Don Wilhelm]

LS,

The most common problem with the thermistor board is a solder bridge on 
that board.
One quick check is the voltage at U6 pin 5 which should be 1/2 of the 8 
volt supply.
Another check is to see if the voltage at U6 pin 1 is twice the voltage 
at pin 3.  Those voltages will change as the VFO is changed over a 10kHz 
range, so check with several positions of the VFO.

73,
Don W3FPR

On 4/1/2016 10:41 AM, lstavenhagen wrote:
> Hi all,
> Is there a procedure where I could check the K2 thermistor board for proper
> operation once soldered in? I just passed that step in my second K2 build,
> and I'm uncertain about one of the pins - it rocked out of place while I was
> soldering it to the RF board, but of course it's now soldered in. It's not
> just in there but it's IN THERE hi hi and I'd like to check it before
> tearing it up trying to pull it out of the board.
>
>