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 resistor) the encoder comes to life and functions normally. I have verified good continuity between encoder V- and pin 14 of U3. In the manual it says that the MCU can disable the encoder under certain operating conditions. What might those conditions be? One thought I have is that the MCU is disabling it for some reason. My current plan is to try replacing U3. All other functions of U3 appear to be working. Any troubleshooting advice would be appreciated. Thanks for reading. 73, -Josh WU7H ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
