hi,
Look at this image, I have used the spare gate on the 4093 as an oscillator, about 1Hz.
Disconnect the existing wire to pin 12 of the 14553 and connect 4093 pin 4 in its place.
This should auto pulse the counter at about 1Hz, it will prove the if the debounce is the problem or not.![]()
Greetings again; Thanks again. I have done as you suggested with the following results. When I power up the scoreboard the 2 digit led display flashes , however each segment of the display seems to flash at a different rate and at a different brightness. When I connect the test led to #9 on the 14553 pin it does flash. During this test, no buttons were pushed. Does this indicate that the schmitt is defective? Lorne