chain counter display


Hello all;
I have a chain counter display that has stopped functioning properly.
Rather than showing 00, it only shows a single 0 in the left hand digit
space, and does not count up or down consistently. This does this
whether or not the chain sensor is connected, so it does not appear to
be a sensor problem. I have dismantled and disassembled the display
and cannot find any obvious problem. Suggestions?
SM %230

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