> 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?
The breaker is electrically located on the KPA3 *after* the problematic
headers. Unfortunately, the PA current sensor is located on the KPAIO3
instead of the KPA3 or it would be possible to unsolder the breaker
lead closest to the back panel and relocate it to RFC6 on the K3 RF
board.
My own s/n 1450 will be going back to the factory for new headers as
it has developed the "ERR 12V" problem. The tin pins on the RF board
are burned and the female socket on the KPAIO3 has been melted! The
K3 has never been outside the shack and not exposed to high humidity
or salt air.
73,
... Joe, W4TV
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<w3...@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
>>
>> On 2/14/2012 4:25 PM, Buck - k4ia wrote:
>>> Don't tease us like that. ;-) What is the "bypass surgery" method? I
>>> don't remember seeing it.
>>>
>>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
