[Elecraft] [K3] Lost output power...

[Dave Van Wallaghen]

Hi all,

Before I contact service, I thought I might post my problem here in case 
it is something fairly simple.

I returned from a 2.5 week vacation a couple of weeks ago and sat down 
to do the firmware upgrade to my K3. I had my K3 powered off and 
disconnected the antenna while away but it was still connected to a 
serial hub, paddles, P3 etc. It powered up just fine and I have never 
received any type of error message. After the firmware upgrade, I went 
to perform the TX Gain Calibration and noticed there is no power output. 
No matter what power level I set, I have no output either via the Tune 
function or keying. In fact, hitting the ATU Tune button only displays 
"- -" on the front panel. I can hear the relays go through their 
routine, but it never displays the SWR.

I searched the archives and found a few who reported similar problems, 
but only a couple of solutions and a few without any resolution. I've 
ruled out all the settings things I could find i.e Test Mode, Tnx Inh is 
set to off etc. I did remove the KPA3 and I/O board and inserted the 
bypass connector and still the same result. I do have transverter 
output, so it is something past that - I'm presuming in the LPA area.

I really don't know if I had power output before the firmware upgrade or 
not as I just didn't think to try it especially without receiving any 
kind of error message. And I'm pretty sure everything was working before 
I left for Dayton.

Anyway, I just thought I'd ask here first before contacting service in 
case it is a known problem I just didn't find on Nabble.

Thanks in advance & 73,
Dave W8FGU