[Elecraft] Help please - Smoking K2 - no s meter or power controll etc

Sat Jan 17 19:03:00 2004

Hi don
Many thanks for your rapid reply. My K2 is pre 3000. I am downloading the
file now and will study it.
Thanks again & 73
John Petters
Amateur Radio Station G3YPZ
www.traditional-jazz.com
----- Original Message ----- 
From: "Don Wilhelm" <[email protected]>
To: "john petters G3YPZ" <[email protected]>
Cc: "Elecraft" <[email protected]>
Sent: Saturday, January 17, 2004 10:54 PM
Subject: Re: [Elecraft] Help please - Smoking K2 - no s meter or power
controll etc


> John,
>
> Is your K2 serial 3000+ ?  If it is, the control board changes for the
KIO2
> were already on the control board, and you would end up with 'strange
things
> happening' (I don't have the board layout images for the new board, so I
> can't predict what the actual 'strange things' might be).
>
> OTOH, if your SN is less than 3000, the control board changes are needed,
> but they normally cause no problem with or without the KIO2 plugged in,
and
> I believe you said that you found that true after you re-added the changes
> but before you plugged in the KIO2.
>
> There is the off chance that you have something wrong (miswired) on the
KIO2
> that may have caused the same bad results as will happen if one uses a
> standard computer serial cable plugged into the K2 (you DID use the
special
> K2 cable, didn't you).  Tom Hammond N0SS has a document describing what
> might have gotten zapped - look on his website  http://www.qsl.net/n0ss
for
> the PDF file relating to this situation (Tom asks to please download the
> file, do not view on-line).
>
> 73,
> Don W3FPR
>
> ----- Original Message ----- 
>
> > Greetings
> > I have just built the KIO2 interface. My K2 has been fine until I came
to
> > modify my control board to add the I/O. I gor info 090. This led me up
the
> > garden path. I un modified the board and had a whole lot of weird
effects.
> > Finally I reset the K2 to its default settings and it worked. I then
> > remodified the board and tested it and it still worked. I inserted the
I'O
> > board, switched on and smoke appeared I disconnected the I/O switched on
> > again and I now have no s meter, now TX power control(although the
display
> > says it it changing the power) no ssb signal although I have full
carrier
> > power on all bands. The S meter Hi and lo calibrations do not work,
> neither
> > do the grph indications. I get no power indication on the bar display on
> > transmit.  U6 is version 2.01.
> > I do not know where the smoke came from. It seemed to be from thr RF
board
> > but I can see no sgns of burnt components.
> > Any ideas greatly received.
> > Extra frustrated due to having just completed (successfully I think )the
> 2M
> > XV.
> > 73
>
>
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