What should I do if the screen of the dynamic checkweigher does not display during use?

The dynamic checkweigher is powered on, and the touch screen does not display.
How to deal with it yourself first, the following is the inspection process, I believe this set, and can solve the urgent problem.

1. Check whether the power supply is normal;

2. Check whether the switch power supply itself is damaged;

3. Check whether the power switch is damaged;

4. Check whether the leakage switch in the electric box has tripped;

5. Check whether the 24V circuit is short-circuited and whether the fuse is burned;

6. Whether the touch screen itself has quality problems.

7. If the above inspection still cannot solve the problem, then call the checkweigher unit for on-site repair.