Blank display on 1st power up

[Roland Whitsitt]

I just did the 1st aliment "smoke test".  Put power to it for the first time.  When I turn it on, after a second, something clicks.  The display is lit but nothing else.  No letters or anything. Now what?  I wonder if it's one of those main chips.  I got this kit partially assembled in a box.
Thanks for any help.
Roland in Stockton, Ca.
N5VWN
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[Don Wilhelm-3]

Roland,

That sounds like the behavior one would see if the control board is not
properly plugged in.

Since you received the kit partially built, you should first gain confidence
in what the previous builder has done.  I suggest that you go through the
steps in the manual (starting at the beginning) and recheck everything -
component values, proper orientation of components, and the soldering of
each component.  I know it is a large task, but is the only way I know to
check things.

Chances are very good that the components are not at fault - the most common
cause of problems is improperly soldered connections, second is incorrect
components (or incorrectly located components).  Actual component failures
are way down on the 'trouble' list - they may fail, but that is rare.

73,
Don W3FPR

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]]On Behalf Of Roland & Elvie
> Whitsitt
> Sent: Saturday, February 26, 2005 10:12 PM
> To: [hidden email]
> Subject: [Elecraft] Blank display on 1st power up
>
>
> I just did the 1st aliment "smoke test".  Put power to it for the
> first time.  When I turn it on, after a second, something clicks.
>  The display is lit but nothing else.  No letters or anything.
> Now what?  I wonder if it's one of those main chips.  I got this
> kit partially assembled in a box.
> Thanks for any help.
> Roland in Stockton, Ca.
> N5VWN
>

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[G3VVT]

 
In a message dated 27/02/05 03:13:02 GMT Standard Time, [hidden email]  
writes:

I just  did the 1st aliment "smoke test".  Put power to it for the first  
time.  When I turn it on, after a second, something clicks.  The  display is lit
but nothing else.  No letters or anything. Now what?   I wonder if it's one of
those main chips.  I got this kit partially  assembled in a box.



If it is a K2 check that pin1 has been soldered on U1 the LCD driver on the  
K2 Front Panel board. I and number of other builders missed this  for some
reason. Difficult to do afterwards as it needs the LCD display  removing to
really get at it. However it is possible however to bypass this  point with care.
 
Bob, G3VVT
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