Using the schematic from the data sheet [image: 8453 Circuit.jpg] This works with the count moving around but other numbers flash erratically, especially close to the number that is supposed to be lit. *When I moved the bottom of C1 to the other side of R1 it works perfectly. It is rock steady and does not care about line voltage or the 5v supply (shown above as 8v but used at 5v)* If this is an error it is continued through all the documentation and is consistent. Changing the value of C1 up and down by 10 had little effect but a smaller C1 helps a bit. My Rst are all directly on the socket pins and the wires are all about 5 inches long. I have varied the line voltage with little effect. Any suggestions???
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