[Elecraft] K3 no effective TX on 10MHz bands

[Rick Bates, nk7i]

You can always try the "physical reset maneuver" method.  With a 
non-shorting tool (wooden pencil), sharply tap the relay being 
tested.  😉  Only the amount of energy used, changes according to size 
(smacks works on kids too!  😛).

But check the RF path, most relays (as I recall) pass received RF too 
(so deafness is a clue to localize the issue cause).

While you're in there, one at a time, unplug, replug each TMP connector 
(so you don't lose track of where it goes) as a general maintenance move 
because they can get a layer of crud over time. Connector pull, NOT the 
wire/s.

GL ES 73,
Rick nk7i


On 7/30/2025 11:16 AM, andy.nehan at btinternet.com andy.nehan--- via 
Elecraft wrote:
>
> I realise that it looks like the soldering iron will have to be busy. 
> Perhaps there is a relay that has died?? I would love to know what 
> component to investigate further - perhaps relays K4 and K5?
>
> I cannot find a layout for the pcb and none seem to have been produced.
>
> Any advise most gratefully received.
>
> I operate the rig stand alone so there is no interconnection to other 
> equipment excepting my PC, however in SSB the problem persists.
>
> Andy G4HUE
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to rick.nk7i at gmail.com