Ron,
It sounds like something is drawing excessive current in your K2 and
causing the resettable fuse to open.
Open the K2 and check the resistance from the Q7 and/or Q8 collectors to
ground. It will normally be in excess of 1500 ohms, but if it measures
low (100 ohms or so) I would wager that one of your PA transistors has
gone "belly up".
73,
Don W3FPR
Ron McCurdy wrote:
> While listening the K2 just cut off. When I try to turn it on, the lcd
> flashes on and immediately back off, as if, the MCU was shutting it off.
> The power supply voltage is fine and there are no external fuses blown.
> Where should I look first?
>
> Mac
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home:
http://mailman.qth.net/mailman/listinfo/elecraft> Help:
http://mailman.qth.net/mmfaq.htm> Post: mailto:
[hidden email]
>
> This list hosted by:
http://www.qsl.net> Please help support this email list:
http://www.qsl.net/donate.html> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 8.5.287 / Virus Database: 270.12.0/2066 - Release Date: 04/18/09 09:55:00
>
>
______________________________________________________________
Elecraft mailing list
Home:
http://mailman.qth.net/mailman/listinfo/elecraftHelp:
http://mailman.qth.net/mmfaq.htmPost: mailto:
[hidden email]
This list hosted by:
http://www.qsl.netPlease help support this email list:
http://www.qsl.net/donate.html
Locked
