[Elecraft] K2 VFO / Encoder Problem

[Don Wilhelm]

Nidge,

Yes, from that I would surmise that U3 pin 14 is damaged - however, 
check the ENC A and ENC B lines for continuity to the microprocessor 
just to be sure there is nothing wrong there.

73,
Don W3FPR

Nigel (Nidge) Smith wrote:
> Hi Don,
>
> Many thanks for the quick reply.
>
> So far the readings I get on U3 are as
> follows:
>
> Pin 14 =  0.1V and 0.133V when the encoder is
> rotated.
> Pin 15 =  4.12, which varies when the encoder is
> rotated.
> Pin 7 =  3.4V with slight variation when the
> encoder is rotated.
>
> So from the above would you say it's safe to
> assume that U3 has a damaged output on
> pin 14?
>
> Again thanks very much for taking the time
> to reply.
>
> Regards
>
> Nidge (G0NIG)
>   
>