I've been assembling the Ice Tube Clock kit, and I've ran into an issue. At the appropriate time in the instructions I turned on the board and it sounded the boot beep, and again when I was verifying a high voltage at the zener diode it beeped just fine. After installing the VFD and the rest of the components to drive it, I no longer get a boot beep, and the center of the display glows dimly. I've removed the VFD assembly and the chip from the PLCC socket , but it still won't boot.
I've verified 9V from the DC adapter, and 4.7V both from the 7805 and at the V+ pin on the ATMega. I'm not sure where to troubleshoot from here. Here's what my board looks like.http://imgur.com/a/gft91