[Elecraft] K3 Hi current display

Russ erusst at att.net
Tue Mar 15 15:43:26 EDT 2011


I recently repaired my K3 LPA by replacing one of the output MOSFETS and 
making other modifications per Gary Surrency.  I had to re-adjust the bias 
on the finals using an external ammeter and was able to complete that 
successfully.  The LPA now puts out the full 12W.  However, the front panel 
display shows that  the K3 is always drawing aroung 24A when I know it is 
less than 1A on the external meter.  The reading is the same whether or not 
I have the KPA3 installed.  I still haven't had a response from Gary so I 
thought I'd ask if anyone else has seen this.  I have checked the output of 
the current sense  U1 and it is correct.

Anyone have any ideas???

Thanks,
Russ
N3CO 



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