[Elecraft] ERR AT3 on K3

[Michael Eberle]

It very well could be the pin connections.

This weekend I started intermittently losing TX audio and when holding 
TUNE, it would go into TX, display 0 watts, and put out no power.  
Shutting the K3 and power supply off and turning everything back on 
seemed to correct the problem once but then it started doing it again.  
I removed the top cover and started checking connections of the 'TMP' 
cable connections. Pushing on some of the ones on the KREF3 board made 
the problem come and go.  It didn't seem to be any particular one 
though.  I ended up removing the KREF3, cleaned the (tin) pins, put 
everything back together and it has been working fine so far.

Mike - KI0HA

On 3/5/2018 19:53, Dave Hachadorian wrote:
> If your K3 does not have gold pins on the front panel, and they are 
> getting oxidized, strange error messages may occur on power-up.  
> Either do the gold pin mod, or hit the old tinned pins with DeoxIT.
>
>
> Dave Hachadorian, K6LL
> Yuma, AZ
>
> -----Original Message----- From: Don Wilhelm
> Sent: Monday, March 5, 2018 5:40 PM
> To: Jed Petrovich ; Elecraft Email List
> Subject: Re: [Elecraft] ERR AT3 on K3
>
> Jed,
>
> I would suggest unplugging the KAT3 and re-inserting it. Sometimes that
> will wipe the contact pins of any oxidation and correct the problem.
> Consult the K3 Assembly manual to see how to install the KAT3, reverse
> the steps to remove it.
>
> Repair is possible if you are capable of troubleshooting to the
> component level.  The schematics are available for download from the
> Elecraft website.
>
> If that does not resolve the problem, then contact support at elecraft.com
> for further actions.
>
> 73,
> Don W3FPR
>
>
> On 3/5/2018 7:20 PM, Jed Petrovich wrote:
>> Hello all:
>>
>> Over the weekend I was getting an ERR AT3 on my K3 when I first turn 
>> on the
>> radio. I did read in the manual about removing the KAT3, but decided 
>> just
>> to try setting the Config to "not inst" and the message no longer 
>> appears
>> during power up. The radio seems to work just fine without the tuner
>> "installed".
>>
>> Is it likely the KAT3 is the problem or could it be something else? Also
>> wondering it is possible to have the KAT3 repaired.
> ______________________________________________________________