SP3 intermittent A/B switch

[mjpilgrim]

My apologies if I've overlooked SP3 discussions including this annoying
symptom on mine.  I purchased this SP3 new  a couple years ago.  After a few
weeks i noticed the A/B selector switch had become rather touchy, and at
times the audio would not be present unless I jiggled the switch a few
times.  I sort of migrated away from listening aloud, resorting to my
headphones in order to reduce disruptive noise for the family.  Recently I
decided to listen through the SP3 and was quickly reminded there was a
problem.  in order to listen, I have to periodically jiggle the A/B switch
or activate it back and forth between A and B until finally the audio comes
through clearly.  I swapped inputs from A to B and back again, but nothing
helped.

Am I dealing with a known problem on the SP3, and if so, is there a simple
remedy?  If a new switch is advised, is that available from Elecraft?  I
welcome any helpful suggestions.
Thanks.
Be safe.  73's
Mike Pilgrim, K5MP, Boca Raton, Fl



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[Grant Youngman-2]

Mike ..

This has come up before, at least once.  I think I’d try giving it a spritz of DeOxit and then working it a few times.  One suggestion was to run about 1ma of dc current through it and switch it a few times to clean it.  (I’m not sure I’d go that far, but it might work).

You can request the part number, price, and, I presume, stock status through the Support -> Parts Order From web-link, or just give them a call on Monday.

Grant NQ5T

> On Jul 25, 2020, at 6:38 PM, mjpilgrim <[hidden email]> wrote:
>
> My apologies if I've overlooked SP3 discussions including this annoying
> symptom on mine.  I purchased this SP3 new  a couple years ago.  After a few
> weeks i noticed the A/B selector switch had become rather touchy, and at
> times the audio would not be present unless I jiggled the switch a few
> times.  I sort of migrated away from listening aloud, resorting to my
> headphones in order to reduce disruptive noise for the family.  Recently I
> decided to listen through the SP3 and was quickly reminded there was a
> problem.  in order to listen, I have to periodically jiggle the A/B switch
> or activate it back and forth between A and B until finally the audio comes
> through clearly.  I swapped inputs from A to B and back again, but nothing
> helped.
>
> Am I dealing with a known problem on the SP3, and if so, is there a simple
> remedy?  If a new switch is advised, is that available from Elecraft?  I
> welcome any helpful suggestions.
> Thanks.
> Be safe.  73's
> Mike Pilgrim, K5MP, Boca Raton, Fl

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[IK4EWX]

I had this problem a pair of years ago.
The same problem, exactly, that could be solved only changing the switch and
the annex internal cabling.
You should require  it to Elecraft.
It need 20 minutes becouse the speaker must be largely disassembled for
changing this part.
Ian IK4EWX



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