Thanks to you guys for the ideas. The voltage does not vary when going to transmit mode. It stays a constant 13.5 volts and the current drain stays at about 1.18 amps. The horizontal lines are two lcd (end to end horizontal) lines that take the place of the frequency when I go to transmit. As soon as I go back to receive the frequency returns. These lines generally indicate that a device is not installed as I recall such as dvr3, kat3, etc. My wife says we had some distant lightning while I was at the DX convention but all equipment was grounded. I'm suspicious that static fried something. Bypassing the KPA3 does not make any difference. I do hear a side tone in CW but again, there is no RF being produced. Initially the problem was not being able to do 5 watt tx gain and the K3 shut off on its own. I was able to see power output while doing the 50 watt tx gain but as stated now there is no RF being produced at all. Thanks again and it looks like a trip to Elecraft for the K3.
Todd -----Original Message----- From: Jim N7US Sent: Sunday, April 29, 2012 9:09 AM To: 'Elecraft List' Cc: 'Gary Surrency' Subject: Re: [Elecraft] K3 no RF output Todd, I experienced the same problem a couple of months ago. I never noticed a fault, but maybe it did it, and I didn't notice. I emailed Gary (supp...@elecraft.com) and tried the EE INIT including reloading previously saved configurations. I ended up sending the radio (S/N 3598) in. Keith found an IC that wasn't properly soldered, but really nothing else. It never malfunctioned while there. He did extended burn-in sessions and installed a couple updates, including De-Oxit to the front panel connections. It's worked fine since then. I was charged for an hour of time, and I imagine he spent more time than that. It was unsettling to not have conclusively determined the problem, especially since it seemed to happen without warning, but it's been working fine. 73, Jim N7US -----Original Message----- From: T Gahagan [mailto:wa7...@gmail.com] My K3 produces no RF in transmit at the 10 watt or 100 watt levels. The display shows two horizontal lines during transmit and shows 0.0 watts output. I have loaded older (4.47) firmware and then reloaded newer (4.48). I have done a re-initialization and reloaded all parameters. I removed the KPA3 and reinstalled it. No noticeable burned components were found. I believe the K3 did show, very briefly, a fault 6 and fault 7 but it was a very brief flash in the display. I thought SWR sensing diodes might have been the cause so I replaced D36 and D37. Any help would be appreciated. Thanks Todd ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
