notTHEwillienelson
Member
I have 4 dragons breath pcbs for a small batch. I haven't built this one before. Built the first one. Nothing. Passes signal in bypass, LED lights when activated, no sound. Triple checked all the parts were correct values and correctly oriented. Reflowed solder joints. Tried a second 2n2222a. Still nothing. Figured I'd just populate a 2nd pcb and cross my fingers. Nada, zip, same symptoms (except I didn't solder an LED in yet). What am I missing here?