[Elecraft] KPA100 ...again!
John A. Magliacane
[email protected]
Fri Oct 10 16:33:00 2003
Hi Lou.
> Hi guys,
>
> Finishing up my KPA100 and ran into a snag. The manual on page 43 has the
> voltage checks. There should be 90 to 150 volts on the cathode of D13, I get
> .5 volts. Also the fan runs all the time on power up.
>
> Where have I gone wrong??
The fan will stop once you calibrate the KPA100's temperature
sensor against the known room temperature (in degrees C).
As far as the low voltage is concerned, check to see that the crystal
oscillator associated with the voltage multiplier is functioning.
Then check to make sure the associated toroid is wound and installed
correctly. Lastly, make sure all the associated diodes are installed
correctly.
73, de John, KD2BD
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