VGA cables are incompatible with the KPA500 and KPA1500. You will need a straight-through cable. BUT, you also need some pins removed. The power pin of the K3 is not compatible with the power pin of the KPA500 or KPA1500, and will result in the problems you have seen. The cable is described in the KPA500 manual, rev E1 on page 45. I’m not sure where it is in the KPA1500 manual, but I would be surprised if we didn’t include the same table there.
73, Jack, W6FB Elecraft Engineering > On Sep 17, 2021, at 7:47 AM, Jim McCook <[email protected]> wrote: > > Now I see what's going on. Originally I used the Elecraft cable between the > K3 ACC and the KPA1500 and everything was OK. The K3 could be powered down > normally. When I moved that K3 to a spare position, that cable wasn't long > enough, so I ordered an extension VGA cable. This is when the problem > occurred. Apparently the extension is the problem withh pin 8. Will see what > Elecraft Support says. 73, Jim W6YA > ______________________________________________________________ > 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] ______________________________________________________________ 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]
