Re: [Elecraft] KPA3 Rev B not output

Life in the age of vacuum tubes [valves] and high voltages was much simpler. Just take the bottom off and look for where the fire was in the corner of the chassis. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County Michael Carter wrote on 6/3/2023 3:43 PM: Hi George, Congratulations on

Re: [Elecraft] KPA3 Rev B not output

Hi George, Congratulations on your excellent sleuthing! Regardless of which solder joints were reflowed to solve the problem, you found the troublesome one(s). Thanks, too, for reporting back to the reflector - it helps to spread the knowledge base. 73, Mike, K8CN

Re: [Elecraft] KPA3 Rev B not output

TLDR; the power amp is now working and putting out 100 watts. I thought I would follow up on this post. After I swapped a different KPA3 into the radio that was not working - that radio worked. That proved to me that it was likely the KPA3 that was the issue. I had inspected it and cleaned

[Elecraft] KPA3 Rev B not output

I posted here last fall when one of our K3 radios stopped putting put any power during the last few hours of the CQ WW CW contest. For many reasons I am finally getting back to looking at this failed radio. I swapped in a known working KPA3 Rev C module and the radio works as expected now on