K2 Troubleshooting

[Scott Cashel]

Good Day,

I have completed the assembly of the control board, front panel, and initial rf board
and assembled same. On power up the background illuminates and some clicking occurs but
nothing else. I have disassembled and rechecked component locations and retouched the
solder connections several times. Although I can find nothing wrong I obviously have made
errors somewhere. I am not an engineer and I appear to be in over my head.

Please Help!

Scott Cashel
KJ5ME
Arlington, TX
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[Bob Miller-6]

Scott,

If you aren't seeing anything on LCD display, go back and check the
soldering on the display.  The pins are not really long enough and just
barely protrude through the board. I had a problem with part of my LCD and
that was the problem. You may want to solder from the top of the board to
ensure you have contact with the circuit board.

Bob
WB6KWT
----- Original Message -----
From: "Scott Cashel" <[hidden email]>
To: <[hidden email]>
Sent: Thursday, July 29, 2004 9:55 AM
Subject: [Elecraft] K2 Troubleshooting


Good Day,

I have completed the assembly of the control board, front panel, and initial
rf board
and assembled same. On power up the background illuminates and some clicking
occurs but
nothing else. I have disassembled and rechecked component locations and
retouched the
solder connections several times. Although I can find nothing wrong I
obviously have made
errors somewhere. I am not an engineer and I appear to be in over my head.

Please Help!

Scott Cashel
KJ5ME
Arlington, TX
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[Don Wilhelm-2]

Scott,

The most common failure point is a solder joint.
So first check soldering, then re-check the soldering, and finally check all
soldering.

We will need more details of what works and what doesn't (what do you see on
the display, what do you hear in the headphones, and under what conditions,
etc.) to give further informative advice (at this point we can only guess
based on the limited information available).

73,
Don W3FPR

----- Original Message -----
From: "Scott Cashel" <[hidden email]>
To: <[hidden email]>
Sent: Thursday, July 29, 2004 12:55 PM
Subject: [Elecraft] K2 Troubleshooting


Good Day,

I have completed the assembly of the control board, front panel, and initial
rf board
and assembled same. On power up the background illuminates and some clicking
occurs but
nothing else. I have disassembled and rechecked component locations and
retouched the
solder connections several times. Although I can find nothing wrong I
obviously have made
errors somewhere. I am not an engineer and I appear to be in over my head.

Please Help!

Scott Cashel
KJ5ME
Arlington, TX
_______________________________________________
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Post to: [hidden email]
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[G3VVT]

Scott,
 
Check that you have soldered pin 1 of the LCD driver U1 on the K2 front  
panel board. I and others have missed this joint. Rather difficult to  rectify
afterwards, though can be done.
 
Bob, G3VVT
K2 #4168
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[Peter Howson]

Scott

If you decide to solder thepins on top of the board as I did. watch the
barrel of the soldering iron. It is all to easy to catch one of the push
buttons, they burn quicker than a PA transistor running into a dead short. I
know, I burnt the tuning rate button  :-(

Peter GM8GAX
K2 #4027
98% complete


----- Original Message -----
From: "Bob Miller" <[hidden email]>
To: <[hidden email]>
Sent: Thursday, July 29, 2004 6:43 PM
Subject: Re: [Elecraft] K2 Troubleshooting

> Scott,
>
> If you aren't seeing anything on LCD display, go back and check the
> soldering on the display.  The pins are not really long enough and just
> barely protrude through the board. I had a problem with part of my LCD and
> that was the problem. You may want to solder from the top of the board to
> ensure you have contact with the circuit board.
>
> Bob
> WB6KWT
> ----- Original Message -----
> From: "Scott Cashel" <[hidden email]>
> To: <[hidden email]>
> Sent: Thursday, July 29, 2004 9:55 AM
> Subject: [Elecraft] K2 Troubleshooting
>
>
> Good Day,
>
> I have completed the assembly of the control board, front panel, and

initial
> rf board
> and assembled same. On power up the background illuminates and some
clicking

> occurs but
> nothing else. I have disassembled and rechecked component locations and
> retouched the
> solder connections several times. Although I can find nothing wrong I
> obviously have made
> errors somewhere. I am not an engineer and I appear to be in over my head.
>
> Please Help!
>
> Scott Cashel
> KJ5ME
> Arlington, TX
> _______________________________________________
> Elecraft mailing list
> Post to: [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
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [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
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> Elecraft web page: http://www.elecraft.com
>


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