[Elecraft] KPA100 - Low Voltage output from High Voltage Bias Supply Circuit

[Vic K2VCO]

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