Farhan, all
Ok some progress today. Verified that the 12v and 5v are present before, during and after the reboot. I do hear a relay click when I select CQ then the Sbitx stops working and reboots. I assume it is K9 although haven't looked at it yet. Any thoughts - maybe U3 or U4? Can anyone share their opinions on my approach?
Art
N2AJO?
