We have a machine which is using a timer and the timer has an LCD, a few of the displays, with no reason all of a sudden displays a black box blinking... If I switch off the machine from power switch and wait for 5-10 seconds, everything goes back to normal, but if I switch off and on very quickly, like in a second, it doesn't go away.
any leads ? ideas, you may give me would be helpful, Thank you
This only happens, maybe 10-20 lcds out of 1000