New here and to saber building, I have Definately caught the bug!
I have gotten hold of a YDD soundboard that is not working, before I do what it likely deserves and bin it! I thought I would give it a crack at seeing what's wrong. On first inspection I found the battery was only putting out 2.5v (18650 cell) so I plugged the soudcard into a 3.3v supply, it does wake up but only to pulse the power button LED and the PCB mounted LED. I upped the voltage to 4.3v and the same result. Would anyone have any ideas? I can't find any info online about these boards other than they are cheap and often badly soldered ( this one seems okay). Any help would be awesome!