Lost speaker audio in K2

[DaveL G3TJP]

The headphone jack seems to be the K2's achilles heel, Steve.  It's something that crops up on here from time to time.

After completing my K2 I had no speaker audio but headphones were OK, so had to swap out the headphone jack.  Elecraft were like lightning sending a replacement all the way across the pond.

My friend's K2 had very low speaker volume and a replacement headphone jack fixed that too!

Before pulling it apart, though, do check you have the speaker connector plugged into the 2-pin connector on the main RF board and not the 2-pin location with the same designator on the control board.  Also, check your speaker from that point with an ohm-meter, just to be absolutely certain it's not a problem with the extension speaker jack.

73  Dave L  G3TJP

PS.  Do like I did and invest in an additional spare headphone jack.  That way, Murphy's law will be defeated and it will never ever give you any more trouble.  Meanwhile, the spare jack will slowly gather dust HI!
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[AJSOENKE]

You have probably experienced a common failure  in the front panel phone
plug. Order a new jack from Elecraft and replace the  broken one. It's a small
plastic part that slides back and forth to engage the  headphone or speaker. it
splits in half and cannot be returned to closed when  the headphone is removed.
I bought two, just in case, but I think they have the  problem fixed. Some
1/8" jacks that are sold in stores is inferior, although  stronger. The use a
pressure contact that will get noisy or fail at the contact.  The Elecraft
supplied jack is a positive contact slide switch, but a batch was  flawed. Go real
easy on the soldering heat when you install - "just in  case".

Al WA6VNN  




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