Hi again, Bill, I re-read your post and realized that it's only the buttons to the right side of the LCD display that fail to function (with the exception of the MODE button). Is that correct?
If so, I will retract my statement about the parallel load shift register not working properly. If it works for the buttons to the left of the LCD display, then the shift register is working OK. It would then seem that the BANK2 switches to the right of the display are not being polled. The /BANK2 signal that polls these switches is generated in U3, a 6B595 shift register. That shift register receives data serially from the MCU and produces the /BANK1 and /BANK2 signals that activate each switch bank in turn. U3 also generates the /ENC_RD signal that allows the main tuning knob to be read. Please confirm which controls do register any response, including the 4 potentiometers to the left of tuning knob. Thanks, and 73, Mike, K8CN ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
