[Elecraft] C9 on KIO3

[Adi Andrei]

Encouraged by Gary Surrency's feedback that I can just replace it with a normal capacitor, I just went ahead and did it..
In any case, I understood from Gary that RS232 wouldn't work if I messed up, and RS232 worked totally fine, controlling the radio from Ham Radio Deluxe. So all good here now.

Thanks Gary and Bill for your help,

Adi
2E0TTX

On 05/05/2011 15:56, Bill W4ZV wrote:
> aandrei wrote:
>> Hi,
>>
>> I knocked out C9, a big capacitor (compared to the other SMDs) while
>> reistalling the subRX.
>> It got hooked by the coax from the Aux antenna.
>>
>> My question is, what does C9 do, and what would happen without it ?
>>
>> Also any suggestions ? I never did SMD soldering, and also this one seems
>> tricky. It still hangs in its [upper] side connection, but it seems as the
>> second connection is underneath it ?
>>
> C9 appears to stabilize the +12V coming from a switch so it is important.  I
> once unknowingly knocked a very small SMD cap completely off a board and
> discovered it lying inside the K3.  It took forever to find where it went
> but I finally did and reseated it!
>
> Yours should be fairly easy to reseat assuming the pad is not torn from the
> board.  Since you're not familiar with SMD soldering, you may want to find
> someone locally to reseat it for you.  I'd first remove KIO3 Main, identify
> both pads where it belongs, apply heat to the connected side so that the
> chip falls on the correct position (assuming it's not torn off) and then
> solder the other side.  If the pad is torn, it still might be possible to
> use some fine wire to make connection to an adjacent connection.
>
> 73&  GL!
>
> Bill  W4ZV
>
>
> --
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