IO Problem

[N5MF]

I have an unusual problem may some one can help with

My K2/100 has stopped talking to my computer.  

I have tried 2 computers thinking it was the serial port but no

I redid the cable and still nothing

Finally I changed the amp lid with the QRP lid and it all works fine.

I have a KAT 100 tuner as well and the rig does talk to the tuner and everything on the amp and tuner works.  ie power, tune, antenna switching.  The rig just doesnt talk to the computer.  Like I said it works with the IO on the qrp lid and the settings on the computers are correct and the IO is on on both the KIO and the K100

Any thoughts

Mark
N5MF
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[Don Wilhelm-3]

Mark,

Other than a bad solder connection on the KPA100 board, the following checks
(in order of probability)should reveal the problem:
1) Broken inductor RFC6, 7, or 8; 2) negative voltage supply to pin 8 of U4
(should be -5 to -25); 3) bad U4 chip.

Remember that the most likely failure is a solder connection.  Even if it
has been working before, still suspect the soldering. Go over all
connections related to the components in the lower left quadrant of the
schematic page 2 of 2.

73,
Don W3FPR

----- Original Message -----

I have an unusual problem may some one can help with

My K2/100 has stopped talking to my computer.

I have tried 2 computers thinking it was the serial port but no

I redid the cable and still nothing

Finally I changed the amp lid with the QRP lid and it all works fine.

I have a KAT 100 tuner as well and the rig does talk to the tuner and
everything on the amp and tuner works.  ie power, tune, antenna switching.
The rig just doesnt talk to the computer.  Like I said it works with the IO
on the qrp lid and the settings on the computers are correct and the IO is
on on both the KIO and the K100



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

[Don Brown-4]

Hi

Check the sidetone. If it is gone also then the sidetone source is set wrong. The sidetone and data out are selected with this menu function and if they are set wrong neither will work. Go into the menu and select sidetone level adjust. Then tap the display button until U8-4 is displayed. Then you should hear the sidetone and the RS-232 should now work.

Don Brown




  ----- Original Message -----
  From: N5MF<mailto:[hidden email]>
  To: [hidden email]<mailto:[hidden email]>
  Sent: Thursday, December 23, 2004 8:59 AM
  Subject: [Elecraft] IO Problem


  I have an unusual problem may some one can help with

  My K2/100 has stopped talking to my computer.  

  I have tried 2 computers thinking it was the serial port but no

  I redid the cable and still nothing

  Finally I changed the amp lid with the QRP lid and it all works fine.

  I have a KAT 100 tuner as well and the rig does talk to the tuner and everything on the amp and tuner works.  ie power, tune, antenna switching.  The rig just doesnt talk to the computer.  Like I said it works with the IO on the qrp lid and the settings on the computers are correct and the IO is on on both the KIO and the K100

  Any thoughts

  Mark
  N5MF
  _______________________________________________
  Elecraft mailing list
  Post to: [hidden email]<mailto:[hidden email]>
  You must be a subscriber to post to the list.
  Subscriber Info (Addr. Change, sub, unsub etc.):
   http://mailman.qth.net/mailman/listinfo/elecraft<http://mailman.qth.net/mailman/listinfo/elecraft>    

  Help: http://mailman.qth.net/subscribers.htm<http://mailman.qth.net/subscribershtm>
  Elecraft web page: http://www.elecraft.com<http://www.elecraft.com/>
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Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
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Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com