Re: [Elecraft] K2 rotary encoder

Quick update on my K2. The new TPIC6B595N turned up on my doorstep this afternoon and my K2 is now 100% operational once again. Thanks again for your help Don. 73, -Josh WU7H Your investigation is "spot on" and I would normally recommend replacing >> Front Panel U3. It is possible for it to

Re: [Elecraft] K2 rotary encoder

Thank you Don. Confirmed I have 7.8V at anode of D6 and zero at anode of D7 in RX. U3 is a TPIC6B595N which is in stock at the usual online electronics retailers and very inexpensive. 73, -Josh WU7H On Thu, May 27, 2021 at 1:33 PM Don Wilhelm wrote: > Josh, > > Your investigation is "spot

Re: [Elecraft] K2 rotary encoder

Josh, Your investigation is "spot on" and I would normally recommend replacing Front Panel U3.  It is possible for it to have one bad input and is quite static sensitive. But first, check that 8R and 8T signal lines are working properly.  An easy place to check is at the anodes of RF Board

[Elecraft] K2 rotary encoder

My K2 (SN: 4073) suffered a sudden problem yesterday. I didn't notice anything happening - one minute it was working normally and the next the VFO knob stopped working. All other functions appear to be working normally, but the rotary encoder is disabled. If I ground the V- pin (via 100 ohm