Kazu, I am not certain how it could have been damaged either, but the fact remains that you either have a soldering problem somewhere or you have a damaged firmware chip. Since it did work at one time and quit working after you made an connection error (even though I cannot determine how that error would have done any damage), I vote for the firmware chip, but I would try re-flowing all the soldering with a hot soldering iron (400 deg C) first. Add a bit of flux and be certain the solder has flowed out onto all the solder pads. Soldering is the most common problem encountered by builders.
73, Don W3FPR Kazunori Watanabe wrote: > Hi Don, > > Thanks for suggestion. I do not have oscilloscope but I can hear 4 MHz from > K3 by putting KRC2 board closer to K3 and > confirm it is from KRC2 by on/off 12v to KRC2. > If chip was damaged, as I am using anti static mat, how chip was damaged is > mystery.... > > 73 Kazu > > ______________________________________________________________ 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
