Hi Eric, While I did not see this particular problem on my build, during visual inspection in that section I found D10 was installed backwards despite thinking "well, I was careful! Of course they're right!" I suggest re-examining that, but I question the reading at pin 16.
According to the schematic, P1 pin 16 is connected directly to the 12v bus with just a 0.1 capacitor (for transient suppression, I suspect) connected to it. Does your supply really measure 12v? If so, something else is drawing it down so I would again come back to checking the diodes or perhaps the orientation of the resistor packs. I'm sure Don will weigh in with a more precise answer, but I hope this helps in the mean time. 73 de Byron KI6NUL Eric Champine wrote: > > Hi all. > I am on page 30 of the K1 manual where you hook up a 12v power supply and > take some readings in 4 different places. > Everything was OK but the reading off of P1 pin 16. It is supposed to be > (Supply - 0.3 V) and I got 9.33 volts. > Any clue what I should check or do? > Thanks all. > > 73 de W2EEC > > Eric > ______________________________________________________________ > 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 > > -- View this message in context: http://elecraft.365791.n2.nabble.com/Help-with-power-problem-on-a-K1-tp5473573p5481043.html Sent from the [K1] 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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
