Check the ribbon cable. A few people have missed a set of pins. Mike W0MU
J6M CQ WW DX CW Contest 2011 J6/W0MU November 21 - December 1 2011 W0MU-1 CC Cluster w0mu.net On 10/29/2011 11:21 AM, Nicolas Drin wrote: > Hi > > I just finished to build KPA500 #455. Unfortunately I found several > problems. > > 1/ fan is not working (I already checked that the 2 wires are a the right > place on the plug - no inversion like someone reported earlier) > > 2/ I coupled the KPA500 to the K3 with the KPAK3aux from Elecraft. For some > bands (14,21,10,5.3) when I push the button on the front of KPA500 the band > is changed on K3 but NOT on KPA500 (example 14 gives 1,8 - 21 gives 7) ! For > this 4 bands, in TX mode, the KPA500 automatic band switching selects the > proper band. > > I thought to a software problem and i tried to reload the firmware (after a > parameter reset to default value) and I run to my third problem... > > 3/No communication available with the KPA500. I tried two configurations Mac > and PC. The serial / USB cable is the KUSB from Elecraft and both systems > are perfectly working with K3 and P3 so I am pretty sure that it is a KPA500 > problem. > > I don't have the schematics of the KPA500 (and in the other hand I'm not a > brilliant technician...) so any help will be appreciated. I should mention > that I already build Norcal 40, SIERRA, K1, KX1, K2, K3, P3 so I have a > little experience and I already checked that I didn't make any mistake > (wire ribbon cable inversion or badly plugged, no thermal insulator). I > performed all test with success with my DMM during the building. > > Last point the HF module seems to wok without problem. > > So again thank in advance for any help > > Nicolas, F5HFZ > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/KPA-455-not-very-well-tp6943877p6943877.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
