[Elecraft] Intermittent Loss of Speaker Audio

[Don Wilhelm]

Pete,

Intermittent operation usually means a marginal connections somewhere. 
Does your K3 have the gold pins on the Front Panel?  If not, I suggest 
that you change them.

To test whether the front panel to RF Board pins are the problem, remove 
the front panel assembly and plug it back in.  If you have a couple 
drops of DeOxit, you may want to apply some sparingly.

Just removing and replugging the pins can wipe away oxidation from the 
pins and allow it to continue to work.

While not necessarily a cure, it is good as a test to try to isolate the 
problem.

BTW - the headphone amplifier is separate from the speaker audio 
amplifier.  So the fact that the headphones work OK says the rest of the 
K3 is fine.

73,
Don W3FPR

On 10/8/2018 7:57 AM, N4ZR wrote:
> My K3 has begun experiencing intermittent loss of speaker audio.  It 
> occurs without warning, typically while I am operating but *not* in 
> conjunction with events such as PTT or CW keying.  Physical connection 
> to the speaker seems fine.  It also recovers spontaneously, sometimes. 
> Headphone audio continues to function perfectly throughout.  Any ideas?
>