[Elecraft] KPA500

[Rick Stanback]

My new KPA500 has started acting up again.  It was coming up  with 
Invalid in the display and no high voltage.  I checked the aux cables 
and re-seated them and that seems to have cured the invalid error but I 
still get no high voltage.  It was doing this after I first built the 
kit and then it just seemed to get over it and was working fine for 
about a week.  Any ideas on what to check the manual does not really 
give you much to go on.