[Elecraft] Lost speaker audio in K2

[drewko1 at verizon.net]

My headphone jack failed in short order. I am constantly jumping back
and forth between headphones & speaker, so the mini-jacks don't stand
a chance with me for very long.

When I got a new jack from Elecraft I decided to add a
headphone/speaker switch to the back panel; now I leave the headphones
plugged in all the time and use the switch to go back and forth. This
is a wonderful mod. It fixed the one truly annoying feature of the K2
(to me, at least).

When I replaced the jack I bent the center front (ground) conductor
flat; one pair of switch contacts are soldered to this contact and the
now vacant PCB trace beneath it (with a sliver of fishpaper between
switch and board for insulation); the other pair to the back contacts
of the jack... well, you can figure it out from the circuit.  I routed
the 4-conductor cable along the front of the control board, toward the
on/off switch; there is a space there where the round cable can get
past the board.

Anyhow, it is so conveniet to be able to switch the audio from
headphone to speaker as often as I want, without having to fiddle with
the tiny ill-fitting plug, and always wondering when the jack is going
to die again.

Next project: fixed level audio output for recording my QSOs.

73,
Drew
AF2Z


On Tue, 11 Sep 2007 22:57:24 -0700, you wrote:

>I just lost the speaker audio in my K2/100, but still have audio through the
>headphone jack. Switching to the regular cover and speaker doesn't help.
>Looking at the schematics, it looks like the headphone jack could be faulty.
>The speaker audio runs through the headphone jack and bypasses the speaker
>when a headphone is plugged in. It looks like the headphone isn't returning
>the audio back to the speaker line when the headphone plug is removed.
> 
>Has anyone else encountered this problem?
> 
>73,
> 
>Steve N6VL
>