My circuit board [with a date code of 0144 (44th week of 2001)] was different from that shown in the photo for step 5. There was nothing printed about doing a reset after replacing the batteries, and there were no visible SMD capacitors. As soon as I put the batteries in, it began working again. Although A76 [alkaline] batteries are specified, the 357 [silver oxide] series can also be used, which is what I had on hand.