Sadly, I have no old PIC chips for the KAT100 in my inventory. It came out of the box with the 1.04 firmware (which isn’t the latest, but I don’t have the K60XV, either.)
I do have a second DB9 cable I can try, if I can find it. > On Aug 6, 2018, at 7:05 AM, Bill Coleman <[email protected]> wrote: > > I pulled out the KAT100 PIC chip and re-inserted. No change. > > I can confirm that transition ARE reaching Pin 40 on the KAT100 PIC chip. I > see roughly three bursts. Two come shortly after turn-on, the third comes a > second later. > > I think you’d need a storage scope or logic analyzer to reverse engineer the > AUXBUS. I don’t have that kind of equipment available. > > >> On Aug 5, 2018, at 7:02 PM, Don Wilhelm <[email protected]> wrote: >> >> Bill, >> >> If it were a bad PIC chip, the results would be consistent. Reseat the >> KAT100 firmware Ic to clear away oxidation. >> Look for a flaky connection on the Control cable - at both ends. >> >> There is not much that you can diagnose with a 'scope other than to >> determine that the chip is getting transitions to it. >> If you want to reverse engineer the K2 AUXBUS, then you could make some >> determination of the AUXBUS correctness, but that is a difficult exercise in >> futility IMHO. >> >> 73, >> Don W3FPR >> >> On 8/5/2018 5:36 PM, Bill Coleman wrote: >>> Jack screws appear to be tight on both ends. >>> >>> After I cycle the power 6-12 times, it will eventually come up. I wonder if >>> I have a bad PIC chip in the KAT100. I may try an older version of the >>> firmware, I think I have one. That will take a few days. >>> >>> I can put a scope on Pin 40 of the PIC chip. I see transitions. Anything I >>> can diagnose with a scope? >>> >>> >> > > Bill Coleman, AA4LR, PP-ASEL Mail: [email protected] > Web: http://boringhamradiopart.blogspot.com > Quote: "Not within a thousand years will man ever fly!" > -- Wilbur Wright, 1901 > > ______________________________________________________________ > 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] Bill Coleman, AA4LR, PP-ASEL Mail: [email protected] Web: http://boringhamradiopart.blogspot.com Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ______________________________________________________________ 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]
