My PC to KPA100 communication suddenly failed. Checked the cabling and
did some initial tracing from J1 to U4. Seems ok incl. RFC:s. I found
deviating voltages on U4 pins:
2 -5,5
3 -10,7
4,5,6 -5,5
7,8 -10,7
with remaining U4 pin readings ok.
Then tried to find the 16293 kHz signal on my SW receiver but couldn´t
hear it. I however find -75 V at the end of the diode chain.....so is
the HV xtal oscillator at foult or not? Any suggestion on what to do
next is much appreciated! Thanks, 73, Per SM0WRA .
K2 no 1623, K1, KX1
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