David, Remove the KIO2 cable from the Control Board and try those measurements again. Compare with your other K2 to obtain a sanity check.
It may be that you had a surge that damaged the pin 26 input of CB U6. Are you certain PORT is set to ON? 73, Don W3FPR On 9/6/2011 12:50 PM, David N. wrote: > Hello All > My KI02 is not communicating with the computer. > I put it in my other K2 and it works ok. > I found that I do not have the 5 volts at the RXD Line (Pin 26) U6 Actual > (.54v) > I found that I have 1.37 volts at TXD Line (Pin 25) U6 when it should be 0 > I have the 5 volts going into the resitor pack rp7 Pin 3 but not at pin 4 > So I figured that the pack is opened but I get a shorted reading between pin > 3 and pin 4 > of rp7. Schematic gives the 2 pins 33k I do not know it this is correct. I do > not see any other parallel circuits across these pins. > But not knowing the make up of the 2 IC's, I cannot know if this is normal. > Thanks David KR4OW > ______________________________________________________________ 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
