[Elecraft] K3 - no output power

[Christian Janssen DL1MGB]

I am not sure if there is a frequency shown when in TUNE mode. My memories tell me that the top line shows the SWR and the bottom line shows the power.

73s Chris



Am 24.03.2021 um 21:32 schrieb Harald Fritzsche (DD0VS):
> Hello Chris,
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> strange is, that your Display does not show a frequency, but it should.
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> I had a water Intrusion in 2019 which causes several defects.
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> I was testing along the Signal path to see the Signal (with RSP-spectrum analyzer), that helped me, to find the defects. It tooks a while also with help of the list here.
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> Receiving is working?
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> Vy73 & GL
> 
> Harald
> 
> DD0VS
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> Gesendet von Mail <https://go.microsoft.com/fwlink/?LinkId=550986> für Windows 10
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> *Von: *Christian Janssen DL1MGB <mailto:chris at dl1mgb.com>
> *Gesendet: *Mittwoch, 24. März 2021 21:05
> *An: *elecraft at mailman.qth.net <mailto:elecraft at mailman.qth.net>
> *Betreff: *[Elecraft] K3 - no output power
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> Hello,
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>  
> 
> it happened during the Russian DX Contest last Saturday, from one second to another. No output. When I tune the display looks like this: http://dl1mgb.com/temp/k3_no_power.jpg
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> Following conditions:
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> - sending into a 50 ohm dummy load
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> - no matter how many watts are set with PWR knob
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> - Test mode off
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> - TX INH off
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> - all driver transistors working (three screw test)
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> - no output power also on external watt meter
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> - happens on all bands
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> - happens with KPA set to "not inst"
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> - knocking on housing doesn't change anything
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> - when starting the antenna tuner, it says 5.0 watts, but no output on the external watt meter
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> I am running out of ideas :-)
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> 73s Chris DL1MGB
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