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" <[email protected]> To: "Russ" <[email protected]> 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 > > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
