[Elecraft] Older K3/100s and the "ERR12V" problem

[Don Wilhelm]

It is not common to remove the KPA3, so I would not mind de-soldering 
one end of the wire(s).
If you want to provide high current disconnects, an Anderson PowerPole 
connector would be ideal - you don't need both the black and the red 
because it is just a couple of single wires.  If you want the 
disconnects, I would buy 2 APP sets - pair the 2 red connectors and pair 
the two black connectors - connect red to red and black to black -- I 
hope that made sense to everyone, but that is how I would do it.

73,
Don W3FPR

On 2/14/2012 5:23 PM, iain macdonnell - N6ML wrote:
> I haven't had a chance to look at the schematics yet, but have been
> wondering .... is it feasible to feed 12v to the KPA3 directly from
> the breaker? Or is that 12v feed used for other things on the RF board
> and/or riser board? Thinking that a fixed jumper from the RF board to
> the KPA3 would prevent easy removal of the KPA3 module, unless some
> intermediate "quick-disconnect" was employed... but if power could be
> taken straight off the breaker, the quick-disconnect is already
> there....
>
>      ~iain / N6ML
>
>
>
> On Tue, Feb 14, 2012 at 2:14 PM, Don Wilhelm<w3fpr at embarqmail.com>  wrote:
>> Buck,
>>
>> The "bypass surgery" is a method of soldering wires around the KPA3
>> connectors that carry high current 12 volts.  I have seen the pictures
>> and words in the past, but I cannot locate them right now.
>> You would do better to change the connectors.  I know the "bypass
>> surgery" has been used as an emergency measure to get a K3 working while
>> on a DXpedition.
>>
>> 73,
>> Don W3FPR
>>
>>