[Elecraft] S meter

[Don Wilhelm]

James,

Well, maybe not that good - just a little application of logic aided by 
a look at the schematic.
Couple that with the facts that the design is known to work and the most 
common cause of failure is the soldering.

Have a good day and an Happy New Year.

73,
Don W3FPR

JC Quinn wrote:
> Wow!  Don, you're good!  I had looked at those pins under 5x 
> magnification and they looked fine.  I reflowed those pins and a 
> couple of more on the board that did look questionable and now she 
> works fine!
> 73 and Thanks a Million!
> James
> ----- Original Message ----- From: "Don Wilhelm" <w3fpr at embarqmail.com>
> To: "JC Quinn" <kc4ee at sonet.net>
> Cc: <elecraft at mailman.qth.net>
> Sent: Sunday, December 30, 2007 6:21 PM
> Subject: Re: [Elecraft] S meter
>
>
>> James,
>>
>> I have to take you at your word that the AGC is working OK.  If that 
>> is in fact true and you cannot get good S-meter indications on the 
>> bargraph, the only thing that could be wrong is th esoldering of pins 
>> 9 and 10 of RP6 or the soldering of U6 pin 3 (all on the Control 
>> Board).  Check those first.
>>
>> Should that not be the problem, then more extensive checks of the AGC 
>> circuit are in order, and you can also conclude that your AGC is 
>> *not* working properly.
>>
>> Remember that the most common cause of kit problems is soldering 
>> problems. When in doubt, check the soldering, then recheck the 
>> soldering.  When you have finished that, check the soldering.
>>
>> 73,
>> Don W3FPR
>>
>> JC Quinn wrote:
>>> With the RF gain fully ccw the S meter will not light at all.  I 
>>> have tried it with the meter set in both DOT and BAR.  Now get this, 
>>> at the end of PART II Alignment, CAL S HI did work.  Something 
>>> messed it up during final construction.  FWIW the Bar Display DOES 
>>> work in transmit showing RF/ALC so its not burned out and the first 
>>> segment comes on in CAL S LO.  Any suggestions as to where to look 
>>> next?  Does anybody know if Elecraft is working on Dec 31?
>>> 73
>>> James Quinn  kc4ee
>>>
>>
>>
>>
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>>
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