K2 #2535 has no menus even though all other functions appear to work. I did resistance and voltage checks on control board and found U6 pin 29 (/DASH) at .10v instead of the expected 5.0v. The 8v and 5v regulators are good. The key jack is not shorted and measures 220ohms to ground from P3 pin 17 when the dash circuit is closed. RP4 measures 82Kohms from pins 7 to 8. When powered up, RP4 pin 7 measures 5v, but pin 8 is at .10v. Pin 8 voltage does not change when U6 is removed from socket. Any hints would be appreciated on where to go from here. ______________________________________________________________ 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
