PRE/ATT intermittent fault

[David Walker-8]

Hi folks,

Occasionally I find the PRE/ATT fails to work.  Sometimes the PREamp
works, sometimes it doesn't.  Sometimes the ATTinuator is louder than
normal mode.

I should have a replacement relay coming with my KPA upgrade - but I ask
could it be something else?

This is only a problem on rare occasions, but when it happens it is
annoying.

PS I've retouched the solder to rule out a dodgy connection to the relay.

Dave
VK2NA
SN 3222


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[DaveVK]

After how many years?  I finally fixed the intermittent sensitivity issue I had with my K2.  The problem was not a latching relay but a cap on the bottom of the main board.  The legs of this cap protrude under the NB option.  I noticed that one of the legs had not been soldered through the hole properly.  

I was too busy and hurried to fix that I did not note the part number... but anyway... this may help somebody else in the future.

Kind regards all...

Dave
VK2NA

David Walker-8 wrote

Hi folks,

Occasionally I find the PRE/ATT fails to work.  Sometimes the PREamp
works, sometimes it doesn't.  Sometimes the ATTinuator is louder than
normal mode.

I should have a replacement relay coming with my KPA upgrade - but I ask
could it be something else?

This is only a problem on rare occasions, but when it happens it is
annoying.

PS I've retouched the solder to rule out a dodgy connection to the relay.

Dave
VK2NA
SN 3222


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Elecraft web page: http://www.elecraft.com