Seven of my front panel buttons do not function on K3 #757. I also used the Switch Test to see that they give no scan codes. All other buttons work OK.
Looking at the the schematic for the "Front Panel - Switches" I see these seven buttons are all connected to the SCANADC0 line into U3. I took off the front panel and put an ohmmeter from ground to the SCANADC0 line, and it gives a few ohms. The other lines (SCANADC1-7) show as open. I looks like either U3, C30, or R27 is bad. Does anyone see any other possibilities? I don't relish replacing U3 since it is a 16-pin IC. Maybe some Chip-Quik or tiny cutters to snip the leads would ease the job. 73, Paul K5ESW ______________________________________________________________ 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
