[Elecraft] K3 - ERR 12V

[Matt Zilmer]

I was 'inside' #24 anyway and saw this posting.  Measured the DC
resistance across the CB.  I can't measure any resistance with the
Fluke DVM.

When keyed down on TUNE at 50W, I see no drop across the CB.  Sounds
like the contact suface is corroded or contaminated on yours.  Better
replace it.  At least that's easy to do, and Elecraft should help you
out on this.

73,
matt W6NIA



On Sun, 15 Mar 2009 09:36:47 -0400, you wrote:

>All of a sudden this morning, I started getting an error message on 
>my K3, ERR 12V.  Then it scrolled Check Circuit Breaker, which I 
>assume was the PA circuit breaker.  The radio would not transmit 
>until power cycled and the power level was reset to below 12W.  I am 
>not convinced that it is a thermal issue, although it could be.  I 
>monitored the PA temp and it doesn't have a direct 
>correlation.  Temps are in the high 30's to low 40's.  I removed the 
>top cover and inspected the circuit breaker.  There seems to be 
>significant IR drop (10s of mv) across it even when not transmitting, 
>so I am wondering if maybe the circuit breaker is failing.  Has 
>anyone seen anything like this before?
>
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