Scott;
Thanks, I guess I'll have to wait until Gary gets back. My voltage readings
are all OKand I've tried a reload of the firmware 3 times with no luck.
Russ N3CO
----- Original Message -----
From: "Scott Ellington" <
[hidden email]>
To: "Russ" <
[hidden email]>
Sent: Tuesday, March 15, 2011 4:04 PM
Subject: Re: [Elecraft] K3 Hi current display
> Russ,
>
> Gary is out of town for a few days.
>
> If your other voltages are reading OK (12 V, SWR, etc.), I would suspect a
> firmware problems. (I've had to reload the MCU code on my K3 a couple
> times to fix other problems.)
>
> I also had some trouble with a KPAIO3 board that was reading KPA3 current
> way too high. Replacing the board solved that problem. In your case,
> with the KPA3 removed, or power set below 12W, the K3 shouldn't even be
> looking at the KPAIO3 sensor.
>
> 73,
>
> Scott K9MA
>
>
>
>
> On Mar 15, 2011, at 2:43 PM, Russ wrote:
>
>> 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
>>
>>
>
> Scott Ellington
> Madison, Wisconsin
> USA
>
>
>
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