Just finished putting my ice. Lock together. It works great except that the Am/pm and alarm indicators won't light up. All e other digits and dots work as expected. I rechecked all my solder joints and still no go. Any suggestions
With a closer look at the soldering on the VFD controller chip, it appears that the VFD controller chip pin for VFD1 may not have flowed well onto the solder pad. A few nearby pins look suspicious as well. Re-touch those joints and see if things improve.