[Elecraft] K2
Don Wilhelm
w3fpr at embarqmail.com
Sat Nov 3 23:43:56 EDT 2012
David,
">" means "greater than" and infinity (very large value) may equal "open
circuit".
That means the only potential problems you have is with J1 pin 5 which
should be greater than 1 meg and you are reading 29.56k. Look for
solder bridges between pins over the entire board.
73,
Don W3FPR
On 11/3/2012 10:47 PM, David Holton wrote:
> Chasing some advice.
>
> K2 problem, " touchy " power control pot.
>
> Removed Front panel and carried out resistance checks of U1 and J1 as per
> the manual.
>
>
>
> U1 checks out OK.
>
>
>
> J1 reads,
>
> Pins 1 to 4 should read > 1M I read open circuit, no reading at all, on a
> Fluke 87
>
> Pin 5 " > 1M I read 29.56K
>
> Pin 6 " > 50K I read 2.26M
>
> Pin 7 " > 1M I read open circuit
> "
>
> Pin 8 " GND I read GND
>
> Pin 9 " > 50K I read open circuit
> "
>
> Pin 10 " > 50K I read 5.3M
>
> Pin11 " > 50K I read open circuit
> "
>
> Pin 12 to 14 " > 50K I read 6.96, 2.7, and 6.96MPins
>
> Pin 15 to 20 " All read in the middle of their
> respective values and 20 is GND.
>
>
>
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