Hi there, since my last thread has gone wild ;-) ... here comes a new one.
I just checked the PCB again for any visual problems but didn't find any. And then I did the measurements again. I now have -0.1 to -0.15V on J3+ (yes, MINUS). Still zero V at TP1. Any idea how this voltage could get there? I don't dare to neglect this reading and proceed with the building... Using a 4.7k resistance I shorted J3+ to ground and almost immediately the voltage rises to 0V. Taking it away results in a slow drop to abt -0.1V. It looks like discharging/charging a capacitor. Kind regards >>>> Old message follows... =20 Good morning, I'm still in the process of building my kpa100. After my learning process concerning soldering :-) I stumbled upon some voltages. I'm on page 43 in the manual now and got some numbers a bit off the given values (PS is 14V). D13 154V U4 -27.4V TP1 0V J3+ 0.1V Are these numbers ok? Especially the last two? Another thing. The fan at this stage is a bit out of control. Calibrating tPA helps, but the K2 seems to not remember this setting. Also strange is that while setting tPA a relay can be heard switching. But maybe this is normal at this point in the process? Kind regards and keep on building... Gerhard DH3FAW Gerhard Schwanz DH3FAW mailto:[EMAIL PROTECTED] http://www.gs-personal.de _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
