Re: KPA100 - Low Voltage output from High Voltage Bias Supply Circuit
Posted by
Vic K2VCO on
Jul 19, 2007; 11:19pm
URL: http://elecraft.85.s1.nabble.com/KPA100-Low-Voltage-output-from-High-Voltage-Bias-Supply-Circuit-tp450397p450401.html
Michael Haygood wrote:
> Hi,
>
> I've been using my K2/100 for many months with great results. After a
> recent storm containing lightning the next time I fired up the K2/100 I
> received the "HI CURR" message and the "HI REFL" messages upon initial
> transmit. This was unusual, so the next thing I did was consult the
> troubleshooting guide in the KPA100.
I would check the t/r switch components, D11, 12, 13, and 14 as well as
Q6-Q7. If something is shorted it would load down the HV power supply.
Also diodes D16-17 in the power/swr bridge could be damaged.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco_______________________________________________
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