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How could I make a shot clock count down without the control board? Answered

I came across an old basketball shot clock (Nevco SCD-2, from 1987) , and upon seeing it I instantly thought of new years, It would be an epic countdown. Not to mention the immensely loud buzzer that it contains. Problem is I can't seem to get any info about how the circuitry works (the clock thing is pre-interenet).  The only input (besides power) is a small plug similar to coaxial that I assume sends some kind of pulse that is decoded on board. anybody got any ideas?

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user
Re-design (author)2011-12-20

It might be easier to just use the numerals and build you own count down timer.

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user
steveastrouk (author)2011-12-20

Take some pictures of the circuit board, and lets take some guesses. I SUGGEST it uses rs232 serial.

Steve

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