[Elecraft] K2 VFO / Encoder Problem

I have in my possession a K2 that has developed a fault with the encoder. When trying to tune the radio, rotating the encoder results in just the last digit displayed flickering back and forth. At first I thought the Optical encoder had failed and so ordered a replacement from Elecraft which

Re: [Elecraft] K2 VFO / Encoder Problem

Nidge, It is difficult to predice the exact voltage levels that will be present in digital signals at any particular time. That may be why the U3 redings may be off from what is listed in the manual. Check by comparison instead. Compare the voltage at FP U3 pin 14 with the voltage your meter

Re: [Elecraft] K2 VFO / Encoder Problem

: Thursday, April 08, 2010 9:17 PM Subject: Re: [Elecraft] K2 VFO / Encoder Problem Nidge, It is difficult to predice the exact voltage levels that will be present in digital signals at any particular time. That may be why the U3 redings may be off from what is listed in the manual. Check

Re: [Elecraft] K2 VFO / Encoder Problem

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

Re: [Elecraft] K2 VFO / Encoder Problem

: [Elecraft] K2 VFO / Encoder Problem 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