[Elecraft] K3 died again

[Don Wilhelm]

Martin,

I recommend you email support at elecraft.com because the support folks 
have handy access to the K3 techs if they are not able to diagnose the 
problem themselves, and can best assist you with the analysis.

73,
Don W3FPR

On 11/12/2019 7:48 AM, Martin Sole wrote:
> Hi,
> 
> My K3 is quite an early unit, S/N 298. Recently upgraded with new synths 
> KRX3A and KXV3, I also have a P3 connected to the radio. A while back it 
> failed with a shorted smd capacitor on the K3REF board causing loss of 
> TX bias voltage. Today it has lost both receive and transmit and I am 
> thinking it might be from the same module. Here's the situation.
> 
> Rig powers on and appears to work normally except soft noise from the 
> speaker, no band noise to speak of and no signals. P3 shows plenty of 
> signals, S9 plus on FT8 freqs but nothing heard other than soft noise. 
> Tuning works as signals move in the band scope. No sub receiver signals 
> either and no TX output. Have not checked transverter output but expect 
> to find nothing there.
> 
> P3 take off at IF output so everything is clearly working up to there. 
> DSP seems to be working as width and shift cause the expected changes in 
> audio. S meter reads dead zero, no movement.
> 
> About the only common point I can see is the K3REF board so it would 
> appear a second failure on this module. Since this is where I had to do 
> earlier work I wouldn't put it past being a user inflicted fault, but 
> that repair was a month or more ago.
> 
> Anyone care to have a guess or share thoughts?
> 
> Martin, HS0ZED
> 
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