Common troubleshooting

1, show garbled:

At the same time press the two buttons for more than 5 seconds reset, reset should show 7.59, and then more than 5 seconds into 8.00. At the same time the buzzer ring.

If you still show garbled, check the welding and the components are installed incorrectly.

2, showing a lack of strokes

If it is a whole row is a position of the lack of strokes, check the resistance of 330 ohms, which 330 ohm resistance control of the digital tube 8 pen section,