[Elecraft] K3 no power out

[Matthew Cook]

Josep,

After the basic checks that Dave and Fred have suggested, if you've not
seen any life I'd quickly check what happens if you turn the power down to
under 10W, this will bypass the KPA3 and if you still see no output then
the problem is deeper into the radio.  From here I'd talk to the folks over
on the Elecraft K3 support email address, they will be able to advise how
to pull the radio apart and make the necessary measurements.   Working back
through the power amplifier chain the next likely culprit is the 10W
amplifier, then the Local oscillator.

I went through something similar where my K3 intermittently refused to
transmit, typically when I'd taken it to a contest.  That one took me a
little longer to fix (faulty LO cable) than I'd care to admit, but your's
isn't intermittent by the sounds, so is a little easier to diagnose and
hopefully fix.

73

Matthew
VK5ZM


On Thu, 9 Feb 2023 at 01:19, Josep Torres via Elecraft <
elecraft at mailman.qth.net> wrote:

> Hi all,
>
> Bad news here…. My K3 (radio 1) is not transmitting power out.!!
> I have used this morning as I normally do and all was fine.
> Around 1330h local time, I turned it on again and did QSO with CT7/DJ2PR
> and all was fine. I let the radio on as the CWT contest started at 1400h
> local.
> When I started to operate the contest I realized that no power was going
> out so very disappointed, I swapped to my other K3 (radio 2).
> I really don’t know what have happened but the thing is that after trying
> for several times, no way, still no power out…
> I think I can hear a light click coming from the back left side.
>
> Any help please..? Thanks.
>
>
> 73,
>
> Josep
> EA6BF
> BUG #256  -  CWops #3072  -  FOC #2182 (ex 1724)
>
>
>
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