OK, I read the archives. The consensus seems to be that DMM's can have inaccurate measurements in this circuit. I powered up, and no smoke. Everything lights up like it is supposed to. Onward!
Brian *Brian F. Wruble, C.F.A. *70 is the new 40.* * Mail: 1107 Key Plaza, PMB 447 Key West, FL 33040-4077 Summers: P.O.Box 57, 7400 Augustine Herman Highway, Georgetown, MD 21930 eFax 305.768.0278 ---------- Forwarded message ---------- From: Brian F. Wruble <[email protected]> Date: Sat, May 18, 2013 at 1:25 PM Subject: K3 Assembly Resistance Check is low To: Elecraft Reflector <[email protected]> My K3 fails the test on page 45 of the assembly manual. The resistance from a pin on U12 to ground is 447 ohms. One of you asked a question ... was the reading the same with the leads reversed? The answer is no, that reading is about 4.5 kohms, and it acts like the meter is charging a capacitor in that direction. It takes a long time for the meter reading to settle down. I put a fresh battery in the Fluke DMM, and I also tested a batch of 5% tolerance 1/4 watt carbon resistors I had. They all read a little low, none read high, but none were low outside the 5% tolerance. So, my reading of U12 to ground is 10% low. The manual is pretty clear that the resistance must be >500 ohms. What is my next step? Thanks. Brian W3BW *Brian F. Wruble, C.F.A. *70 is the new 40.* * Mail: 1107 Key Plaza, PMB 447 Key West, FL 33040-4077 Summers: P.O.Box 57, 7400 Augustine Herman Highway, Georgetown, MD 21930 eFax 305.768.0278 ______________________________________________________________ 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
