[Elecraft] KPA500 Problem

hawley, charles j jr c-hawley at illinois.edu
Sat Jul 6 15:17:05 EDT 2019


Is that something new? I’m not too surprised running it on 115 and starting at 77. 
I’m on 240 dedicated circuit and starting at 82 v which loads to about 67v. I’m doubting that there is any hard fault.

Chuck Jack Hawley 
KE9UW

Sent from my iPhone, cjack 

> On Jul 6, 2019, at 1:44 PM, Roy Koeppe <k6xk at ncn.net> wrote:
> 
> Could a rectifier diode have gone open (as in it's now a half-wave circuit)? If so the filter caps are at 60 Hz. Just a thought...
> 
> Roy    K6XK
> 
> 
> I have a KPA500 with a low HV reading. It is on the center tap and AC voltage is 115v No load and 110v full load. The HV goes from 77v NL to 56v FL (500W output)      Is that something I should look into?    Doug K6JEY
> 
> 
> 
> 
> 
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