[Elecraft] K3: PTT IN problem - cause found...Joe picked it...

[kevinr]

I am fairly new to SMD soldering and rework.  I found these tutorials 
which may help you remove and install that RFC.

The first of four is located here: http://www.sparkfun.com/tutorials/36

Good luck and have fun,
    Kevin.  KD5ONS


On 4/12/2012 10:13 AM, Rick Tavan N6XI wrote:
> Having recently done my first SMD board, I'd like to add one tip that made
> it easier for me. Instead of tinning both pads, I tinned only one. Then I
> held the part with tweezers, flat on the board, just touching the lump of
> solder. I re-heated the solder and slid the part over onto the pad, holding
> it still as the solder solidified. Then I soldered the other pad.  This
> leaves the part nicely flat against the board, with no need to push the
> part down through hot solder while bending it through cold solder on the
> other side. I used curved, padded handle, very sharp tweezers designed for
> the purpose and an Optivisor magnifier. I did about a hundred of these and
> it felt pretty good right from the start.
>
> Warning: I am a definite SMD newbie and my advice may not be technically
> correct. It seemed to work for me, though.
>
> 73,
>
> /Rick
>
> On Thu, Apr 12, 2012 at 7:52 AM, Ron D'Eau Claire<ron at cobi.biz>  wrote:
>
>> A two-terminal SMD is very easy to replace. Find a small, thin tool (e.g.
>> tiny screwdriver, tip of a knife blade or even a toothpick) and place it
>> where the SMD body touches the board and lift up on the SMD while heating
>> one end with your soldering iron. It will tilt up, held by the solder at
>> the
>> other end. Now touch the other end with your iron while holding the part
>> with small needle nose pliers or tweezers to free it.
>>
>> Clean any excess solder off of the pads and leave a small drop of fresh
>> solder on each pad.
>>
>> Set the new part in place and hold it in place with the little tool you
>> used
>> to pry the old part off with earlier. Touch one end, then the other with
>> your soldering iron to "sweat-solder" the part in place. Optionally, you
>> can
>> clean off the pads entirely and have a tiny drop of solder on the tip of
>> your iron that will flow onto the solder pad when you touch each end.
>> That's
>> a little trickier to do at first. Most people tend to have too big of a
>> drop
>> of solder on the iron. If your first just make a "bump" of fresh solder on
>> each pad and wipe your iron before touching it to the joint, you won't have
>> excess solder.
>>
>> --
> Rick Tavan N6XI
> Truckee, CA
> ______________