[Elecraft] K2 freeze at startup... need advice

[Ron D'Eau Claire]

Yep. That happened to me once when I had a short in the key line. 

After muttering "mon Dieu!" I started unplugging things and it started
working

Unplug the key and check again. 

Ron AC7AC

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Don Wilhelm
Sent: Thursday, September 18, 2008 8:34 PM
To: Jean-François Ménard
Cc: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K2 freeze at startup... need advice


Jean,

This is strange - the second case of similar behavior reported on the 
reflector today.  Could it be a case of the 'phase of the moon'?

When the K2 is in transmit state, the behavior will be as you describe - 
no buttons operate but the K2 displays the frequency.

Check to see if your K2 is somehow stuck in transmit.  The easiest way 
is to check the state of the 8R and 8T voltages.  You can checkby 
measuring the DC voltage at the anodes of D6 and D7.  During receive, 
the voltage at D6 anode should be about 8 volts and the voltage at D7 
should be near zero volts.  If the K2 is 'stuck in transmit', those 
voltages will be reversed.

If your K2 is indeed 'stuck in transmit', try removing the key plug and 
the microphone - if something external is creating that transmit 
condition, it should be OK with those cables unplugged.

73,
Don W3FPR

Jean-François Ménard wrote:
>
>
> Hi everybody,
>
> I have my first major trouble since my building experience back in
> 2004. Now, everytime i power up my K2, I can see ELECRAFT and then the 
> frequency..... but everything is frozen after...... still get the 
> frequency displayed, but no button, no function work. I also tried to 
> reset the K2 to the factory default by holding 4-5-6 buttons..... Got 
> the 201 message then back to the ELECRAFT and the frequency..... but 
> still frozen !!!!
>
> Is it possible the the control board PIC got a static discharge or
> something like this !?!?!?!
>
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