[Elecraft] K3 ERR 12 V

[Joe Subich, W4TV]

What is you serial number?

Intermittent ERR 12V is one early warning sign of the "burned
12V pins" on the KPAIO3 and KPA3 boards.  If you have an early
K3 that did not have the "gold pins" on P68B of the KPA3 and
J68B of the KPAIO3, I would be making plans to get them changed.

73,

    ... Joe, W4TV


On 9/6/2015 7:12 AM, Kurt Wiksten wrote:
> During the ongoing All Asia Contest, after a few hours of sleep, I started to call Cq on 20m using my Acom 1000+ K3 at 50 W.
> After about 20 minutes I noticed ERR 12Volt and the power went down to 5 W so I switched off the K3 and power supply.
> After some 15 minutes of thinking I restarted the power supply and the K3. I worked some stations and called CQ for abaut 15 minutes.
> Then again I got the ERR 12V message and K3 switched to 5 W.
> After more thinking and reading the Manuel, I decided to try again but this time monitor the supply voltage, current drain and PA temp.
> I am using a regulated DC Power supply rated 13.8V and 30A.
> During this 10 min I operated barefoot with K3, power at 100W.
> Power supply voltage steady on 13.9V. Current drain on listning at 0.94A. Current drain on voice(SSB): 2 - 15A
> PA-temp: 38-40 degreesC
> As the power supply seems to do its job OK  I wonder if something is intermittently wrong with the K3 PA??
> Any suggestions would be appreciated!!
>
> 73 de Kurt/SM6BGG
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