How to deal with LCD module flower screen?

Because a lot of engineers in the first contact or research and development of the use of liquid crystal module (LCD), the occasional LCD display module flower screen problem. In view of this situation, the following experiences are summarized: (In practical application, you can refer to these processes to gradually eliminate)

The first trick: check whether the connection between the LCD module and the mainboard interface is loose. Poor contact leads to the appearance of "clutter", "miscellaneous" shaped flower screen is the most common phenomenon.

Second tip: Check the motherboard and LCD module is in the above case, such as: strong electromagnetic interference, how many volts?

The third trick: check whether the interface of the motherboard and the LCD module is reversed, and whether the sequence is consistent with the order of the drawings.

Fourth tip: ask the supplier for help.