As we all knows,LED screen have four parts,they are: control computer,display driving matrix,LED display array,power supply.

   The problems mainly in these areas:

    A) Port: information can not be displayed on cumputer,check the power cable

    B) Power supply: LED display adopt power supply with low voltage,large current,and have little differences with ordinary direct current.

    C) Drives: Each line and row doesn't display content,there is fault with conrreponding driving circuit(driving chips),just replace it.

    D) Display: Use LED screen for a long time may cause screen damage or aging,need to maintain or replace.

   LED screen common faults processed procedures(diagnosis procedures):

   A) Make sure your LED screen synchronous or asychronous LED screen,synchronous LED screen's normal display depend on settings of control computer,and there is no need for asychronous LED display completely rely on control computer

   B) Confirm your display problems partly or whole,eliminate communication problems,partly problems can generally be sure is display hardware faults,contact us immediately in case faults worsen;and there are many reasons cause whole screen display faults:

   Synchronous LED screen: make sure whether there are changes in control computer settings or not,and normally work communication,sending,receiving or not.

  Asychronous LED screen: firstly make sure whether there are changes in screen parameters,hardware address,width,height or not,if these parameters are right,then test communication normally work or not,finally confirm LED screen control normally work or not