The digital clock is timed by displaying the numbers through the LED digital display tube. Generally, there are 42 digital tubes on the six digit digital clock. If the digital display on the digital clock is incomplete, it first depends on which number of LED digital tubes are not lit, and the digital clock is constantly changing, so to accurately find out which led digital tube is not lit, first of all, let the timer return to zero, so that the six numbers are lit at the same time, See which led digital tube does not display.
There are generally two cases of incomplete digital display on the digital clock. One is that the LED digital tube circuit is burnt out or the contact is poor, resulting in the failure of the digital tube to turn on. The other is that the poor contact of the circuit connecting the single-chip microcomputer leads to the failure of the nixie tube, which is basically related to the circuit, but the starting point is different. At this time, if it is not for professionals, try to take it to the manufacturer for repair, because there are precision instruments on the digital clock, and the manufacturer also has special tools for measuring timers. If you repair it yourself, it is not only time-consuming but also laborious, and there may be a lack of repair things or the worse it gets. There are not only single-chip computers but also circuit boards on the digital clock, which are not necessarily repaired properly by ordinary people. Moreover, products purchased are generally guaranteed, and they can be directly mailed to the manufacturer for free repair, which saves time and is easy. You only need to indicate which digital tube is not on, and the technicians in the manufacturer will repair this digital clock according to their experience. This saves time and worry.
