1. Set the display area is not right: This in the display player software to re-set the display area size, adjust the
2. Set the font too much: or in the playback software to adjust the font size
3. Unit board problem: bad board of course can not show, change the board, this situation is not common
This problem is mostly hardware problems, and generally the following problems caused.
1. Power cord problem: as the first exclusion object. It is likely that the power cord on the unit board is loose and the display is incomplete.
2. Power supply problem: This is usually the power module failure, resulting in the replacement of power, but this is not common. As the second investigation object.
3. Damage to the control card: Damage to the control card results in incorrect data transmission or incomplete transmission.
4. Unit board problem: bad board of course can not display, change the board, this situation is not common.