[Elecraft] Help with power problem on a K1?

[Byron KI6NUL]

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
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