John, Thanks for the reminder about the pullup resistors - check RP1 to be certain pin 1 (the end with the dot) is at the same end as the "1" silkscreened on the board. Most of the R-paks in the K2 can be swapped end for end, but not that one.
73, Don W3FPR On 7/30/2011 3:49 PM, John Oglesby wrote: > Don - Thanks for the e-mail. I didn't clean the board, so that's OK. > After I got your email, and the response of the reflector seemed to say > that this isn't a common issue, I started to look at the schematic > around U3. What I did notice is that the two switches share a common > data line (D4) to U2. There could be an issue with the pull-up voltage > on that line which might make if flaky across the Bank 1/Bank 2 > transition. So I will take the K2 apart and check U2, U3 and the > resistor bank on D4. > > Thanks for the suggestions. > > 73 > > John > ______________________________________________________________ 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
