KPA500 Problem

[Barry Simpson]

Good morning all

My hitherto bomb proof KPA500 has just failed.

I went to 40m SSB to chase some DX. I pre-tuned the KAT500 via the K3 tune
facility and then called the DX.

During the call, the KAT500 started its continuous retuning issue (I
thought that problem had been resolved but apparently not) and the KPA500
tripped out.

The DX station still heard me and I worked him with what proved to be about
25w.

I then tried to reset the KPA500 but it will not go into transmit in the
Operate position and simply passes through the 25w driving power from the
K3.

There was no bang, smoke or burning smell and the PA voltage is still there.

Before I delve into the manual, has anyone any ideas ?

Thanks

Barry  VK2BJ
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[Jim Brown-10]

On Thu,9/25/2014 1:16 PM, Barry Simpson wrote:
> Before I delve into the manual, has anyone any ideas ?

Put in a Skype call to Elecraft support?

73, Jim K9YC
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[Barry Simpson]

Good suggestion Jim.

However, I tried turning the mains power switch (on the back of the KPA500)
off and on and that appears to have cured whatever the problem was. Now
back at full power.

Thanks for your input.

73

Barry  VK2BJ

On 26 September 2014 06:20, Jim Brown <[hidden email]> wrote:

> On Thu,9/25/2014 1:16 PM, Barry Simpson wrote:
>
>> Before I delve into the manual, has anyone any ideas ?
>>
>
> Put in a Skype call to Elecraft support?
>
> 73, Jim K9YC
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

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[w7aqk]

Barry and All,

Looks like you found the "fix" Barry.  Often the only way to really reset a
microprocessor when it gets "stuck" is to completely disconnect all power
from the unit.  On laptop computers I usually have to remove the battery as
well.  Anyway, glad you solved the problem.

Dave W7AQK

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