[Elecraft] Day 1: Fried something already?
Owen B. Mehegan
owen at nerdnetworks.org
Fri Nov 12 22:50:36 EST 2010
Well, I received my replacement parts today, but so far in spite of my
best efforts, I've been unable to desolder the K12 relay from my RF
board. I've used a combination of solder wick and a pump, and I can
see though the holes at this stage, but I still can't get the relay
free! What's the preferred method of doing this?
--
owen at nerdnetworks.org (Owen B. Mehegan)
'I learned this, at least, by my experiment;
that if one advances confidently in the direction of his dreams,
and endeavors to live the life which he has imagined,
he will meet with a success unexpected in common hours.'
--Henry David Thoreau
On Nov 10, 2010, at 4:45 AM, Don Wilhelm wrote:
> Owen,
>
> That pin numbering is correct - it is just like an IC. From the
> top, position the white bar to the left, and pin 1 will be the
> leftmost pin toward you. On the bottom, you can usually identify
> pin 1 by the different shaped solder pad. Normally pin 1 is round
> while the others are rectangular.
>
> On 11/10/2010 1:19 AM, Owen B. Mehegan wrote:
>>
>> Hi Don -
>>
>> I've just had a look at K12 and I think it may be the culprit.
>> First I
>> turned the K2 on, tuned it to 40m, then turned it off and unplugged
>> everything. I'm not positive I've got the pin numbering right, but no
>> two adjacent pins on a side have continuity right now, so I think the
>> diagnosis is correct. Looking at the relay from the top, I'm assuming
>> that the bottom left pin, when viewed with the writing right side up,
>> is 1. So when I flip the board over and look at the bottom with the
>> coax and power connectors pointing away from me, pin 1 is the top one
>> on the right of the two columns. I.e.:
>>
>> (10) * * (1)
>> (9) * * (2)
>> (8) * * (3)
>> (7) * * (4)
>> (6) * * (5)
>>
>> If this sounds right, I'll go ahead and order a replacement relay and
>> hope that's my only problem.
>>
>
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