PS -- My K3 is #888, so it's right in the same time frame as your #679.

Bill W5WVO

--------------------------------------------------
From: "Bill VanAlstyne W5WVO" <[email protected]>
Sent: Monday, January 11, 2010 7:36 PM
To: <[email protected]>; "Elecraft" <[email protected]>
Subject: Re: [Elecraft] K3 KPA3 Failure

> Yes, I have had this failure mode and at least one other guy as well, who
> posted about on this list. After talking with tech support, Elecraft sent 
> me
> a new KPAIO3 board to try. Just havng returned from holiday vacation, I 
> have
> yet to swap it in, which I really need to get around to. Will let you know
> as soon as I try it. I suspect it will fix the problem. Just a hunch. :-)
>
> There may have been a few or a bunch of these boards that had a bad (i.e.,
> early mortality) device. Beginning to sound like it, maybe.
>
> Bill W5WVO
>
> --------------------------------------------------
> From: <[email protected]>
> Sent: Monday, January 11, 2010 6:50 AM
> To: "Elecraft" <[email protected]>
> Subject: [Elecraft] K3 KPA3 Failure
>
>> Has anyone had a KPA3 cause the display to show ERR 12 v?
>>
>> Power supply checks out normal as do the leads. The circuit breaker is in
>> line and does not drop out.
>>
>> Connections appear ok as does the antenna system which is resonant etc.
>>
>> When the error is displayed the K3 reverts to low power 12w out max.
>>
>> Resetting does not correct the fault, tried placing the KPA3 to bypass 
>> and
>> all works fine. Changed the setting to PA nor and the fault returns
>> immediately.
>>
>> Support have been notified by e-mail bit thought I would ask the group if
>> anyone else has had this happen and if so, was it a KPA3 failure 
>> requiring
>> replacement. Of course the warranty has expired...(:-((
>>
>> 73's
>> Gary
>> K3 #679
>> Sent via BlackBerry® from Telstra
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