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Common Problems Full Color LED Display Control Card
Nov 22, 2016

How to determine whether the control card work properly?

A: The power control card, please observe the power indicator light, red light indicates 5V voltage is connected, if not light immediately turn off the 5V supply. Check the 5V operating voltage is connected, whether over-voltage, reverse polarity, failure, output short circuit. Please use a separate 5V power supply for the control card. If the red light is not lit, it needs repair.

Under normal circumstances the control card, why no display screen brightness or abnormal?

A: After the control card and is electrically connected to the display driver, the default is 16 scan, without display, check the polarity of the control software data and OE polarity settings are correct; if abnormal brightness, there is a line specially lit, OE set backwards Please set the correct OE